What is Incline: Definition and 989 Discussions

The Duquesne Incline () is a funicular located near Pittsburgh's South Side neighborhood and scaling Mt. Washington in Pennsylvania, United States. Designed by Samuel Diescher, the incline was completed in 1877 and is 800 feet (244 m) long, 400 feet (122 m) in height, and is inclined at a 30-degree angle. It has an unusual for United States (but standard for Finland, Mongolia and the former-USSR) track gauge of 5 ft (1,524 mm).

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  1. B

    Mass on incline plane sliding into spring, need to find max compression

    Homework Statement A 11 kg box slides 4.0 m down the frictionless ramp shown in the figure , then collides with a spring whose spring constant is 190 N/m. The angle of the ramp is 30°. What is the maximum compression of the spring? Homework Equations Ei=mgh Ef=1/2kx^2 The Attempt...
  2. O

    Finding the force up an incline given horizontal force

    Homework Statement I need help with part of a problem. I am having problems understanding just how to find the force up an incline when a horizontal force ("headwind") is given. Homework Equations The Attempt at a Solution When drawing a triangle to figure it out I draw the...
  3. X

    Confirm My Suspicions: Calculating Velocity on an Incline Plane

    Here's my scenario...I ran these calculations and I feel they are off due to my velocity values. I have a washer rolling down an incline plane set at 10°. The Length of the Plane is still unknown. Starting at rest, determine the velocity at 2". At this distance a camera with take a...
  4. A

    How to prove Theta for a incline plane.

    In physics class, we always assumed both theta's. Can someone prove to me why the angle for gravity is the same as the angle of the inclined plane? I can clearly see that triangles could be created and visually they look similar, but obviously that isn't enough. Image is in the attachment...
  5. E

    How Do You Solve Projectile Motion on an Incline?

    Homework Statement Part (a) was fine, managed it okay. Homework Equations v_x = 20\cos30 -9.8\sin35 = 3.32 v_y = 20\sin30 -9.8\cos35 = -10 Part (b) is what is giving me trouble at the moment. The Attempt at a Solution \dfrac{4}{5} = \dfrac{v_b - v_a}{u_a - u_b} I...
  6. A

    What is the correct solution for the maximum compression of the spring?

    I've tried a few times on this problem but I can't get the right answer... A box with mass m=1,05 kg slides down a ramp with angle=42.39°. Kinetic friction μ=0,1646 between the ramp and the box. It starts from rest. g=9,806m/s². The box hit's a spring with: k=792 N/m after sliding the...
  7. I

    Gravitational Potential energy on an incline

    Hello all, I'm new to the forum here and desperately need some help in some basic physics concepts that I need to have a firm grasp on for the MCAT. My question is about PE on an inclined plane. For example, there are 3 possible scenarios (the height and mass remains the same for each...
  8. S

    * * Elastic potential energy with box going up an incline.

    *URGENT* Elastic potential energy with box going up an incline. Homework Statement A spring having a force constant of 240 \frac{N}{m} is placed on a plane inclined at 67° to the horizontal. The spring is compressed 0.40 m and a 2.0 kg mass is placed on it. The coefficient of kinetic friction...
  9. W

    Conservation of Energy with Spring and Incline (Diagram Included)

    Elastic Potential Energy with Spring and Incline (Diagram Included) Homework Statement Homework Equations ET = 1/2(m)(V2) + mgh + 1/2k*x2 The Attempt at a Solution ET1 - Wf = ET2 1/2k*x2 - Wf = mgh + 1/2mV2 where, Wf = [(0.53)(2kg)(9.8m/s2)(cos67)](1.3m+0.4m) ^ I used this...
  10. E

    Weight of an object sliding on an incline

    First I would like to appologize for my english, I'm from belgium and I don't often use it to speak about physics. Second, I don't know if I'm in the good thread to speak about that. Ok, I need a little help, I have a problem where an object slidind on a incline plan. I would like to know...
  11. S

    Static Friction of hollow sphere rolling up incline

    For hollow sphere rolling up incline: I know that the kinetic friction will equal 2/3 acceleration since: μgcosθ=2/3a acceleration = 3/5gsinθ so...kinetic friction = 2/5gsinθ But how I do calculate the force of static friction??
  12. S

    Energy and bringing an ibject up an incline

    If I have a 2 box with the same weight and I am to bring it up two inclines with different heights but different level of steepness. Will the work done to bring the object up be the same? Because if the incline have the same surface then it has the same amount of friction. Logical it would seem...
  13. mishima

    Misc Questions: Virtual work, RMS, Friction on incline, and Virtual Displacement

    I have a few questions I thought I'd post together instead of making separate threads, hope that's ok. They are more or less unrelated... 1. Are there 2 conceptual ideas that use the term "virtual work"? I am familiar with the one from intro level physics, but I read there is also one from...
  14. A

    Kinetic friction on an incline.

    Homework Statement A box is sliding down an incline tilted at a 13.0° angle above horizontal. The box is initially sliding down the incline at a speed of 1.40 m/s. The coefficient of kinetic friction between the box and the incline is 0.370. How far does the box slide down the incline...
  15. I

    How Does Friction Affect Energy on an Incline?

    Homework Statement An incline makes an angle of 29.9° with the horizontal. A 8.87 kg block is given a push up this incline and released. It starts at the bottom with initial speed 6.43 m/s, travels up the incline, stops, and slides back to the bottom at final speed 4.49 m/s. Using energy...
  16. E

    Weight on a Scale Down an Incline vs. True Weight

    Weight on a Scale Down an Incline vs. True Weight Homework Statement Judy fastened a set of bathroom spring scales to a wedge shaped skate board as shown and coasted freely down a 30 degree slope. The wheels were well oiled and the platform supporting the scales was horizontal. What...
  17. C

    A block is pulled with constant tension up an incline, find the distance?

    Homework Statement A mass m = 13kg is pulled along a horizontal floor with no friction for a distance of d = 5.1m. Then the mass is pulled up an incline that makes an angle theta = 39 degrees with the horizontal and has a coefficient of kinetic friction u = 0.39. The entire time the...
  18. J

    Finding theta on an incline plane

    Homework Statement A block is resting on a wooden plank. On one end of the plank is a hinge so the other end my be lifted to create and angle θ with respect to the horizontal. The plank has a coefficient of static friction of μs. Using the sum of forces along the plank. Find the angle at which...
  19. P

    Accelerating a Uniform Sphere Down an Incline

    Homework Statement A uniform sphere rolls down a 30 degree incline θ from height h. Initially, the solid is at rest. Find the acceleration for the center of the mass of the solid. I am not sure where to start with this problem. I started with the energy formulas, but I am not sure how to find...
  20. L

    Acceleration on an incline with friction

    A box of books is initially at rest a distance D = 0.545 m from the end of a wooden board. The coefficient of static friction between the box and the board is μs = 0.302, and the coefficient of kinetic friction is μk = 0.238. The angle of the board is increased slowly, until the box just begins...
  21. B

    Find the Power to move a car on an incline

    Homework Statement What power is needed to move a 3000lb car up an 8 degree incline with a constant speed of 50mi/h against a frictionless force of 80lb? ans. 68hpHomework Equations P = Fv 1hp = 550 lb-ft/sThe Attempt at a Solution 1st i draw free body diagram summation of force in the...
  22. K

    What is the Acceleration of a Mass on an Incline Plane?

    Homework Statement A hanging mass, M1 = 0.493 kg, is attached by a light string that runs over a friction-less pulley to a mass M2 =1.81 kg that is initially at rest on a friction-less ramp. The ramp is at angle 30.5 above horizontal. Find the magnitude and direction of the acceleration, a2...
  23. M

    Is the upward Ff of a stationary block on an incline more or less than mg?

    A block of mass m remains at rest on an incline. The force acting up the ramp on this block is a. 0 b. mg c. less than mg d. more than mg I understand that the force of friction cannot be more than the force of gravity because it would then move upward... but how is that the force of...
  24. F

    Dynamics - Blocks on an Incline Plane

    Homework Statement In the diagram below find the 1) acceleration of the system 2) T1 and T2 The ramp is angled 35degrees to the horizontal and coeff of friction is 0.15 Homework Equations The image at the top is the problem's figure...
  25. A

    Horizontal Plane With Friction And Incline Plane With no Friction

    1. A body with mass m = 5 kg and initial velocity = 5 m/s moves along a horizontal plane with length 10 m, where the friction coefficient is μ=0.1, After passing the part with friction, the body moves up along a tilted plane which has no friction. What is the maximum height of body elevation...
  26. J

    A 2.0 kg block is released from rest on a frictionless 30 degree incline.

    Homework Statement A 2.0 kg block is released from rest on a frictionless 30 degree incline. After sliding 0.80 m it comes in contact with the spring, and after sliding an additional 0.20 m, it comes momentarily to rest. What is the spring constant? I knew that spring constant is equal to...
  27. S

    Acceleration of a Block at an Incline

    Homework Statement A rope applies a force T = 500N as shown as the 30kg block moves 14m along the incline. The length of the incline is unlimited. The coefficient of friction between the block and the plane is 0.33 What is the acceleration of the block? Homework Equations \SigmaF = ma...
  28. J

    Hollow Rolling Sphere up incline

    Homework Statement An 800 g, 40.0 cm diameter hollow sphere is rolling along at 4 m/s when it comes to a 25 degree incline. Ignoring any friction, how far along the incline does it roll before it stops and reverses its direction? Homework Equations rolling momentum motion equations...
  29. G

    Spring on incline with static equlibrium, disposition unkown. .

    A mass (m = 3 kg) is connected to a spring of constant k (k = 50 N/m), where the mass is connected at the top to a spring on a fixed incline. The coefficient of static friction between the mass and the incline is µ(subscript s) = 0.6 and the angle that the incline makes with the horizontal is...
  30. U

    Kinematics: acceleration on a an incline (LAB)

    Homework Statement Hey guys, I'm having a problem with my lab report write-up. The purpose of the lab is to find the value of g which should be around 9.8 m/s^2. This was found by releasing a cart from rest on an inclined plane and measuring the time it took to travel across a certain...
  31. B

    Block On Incline Projected Up With Initial Speed

    Homework Statement A block with mass m = 7.4 kg slides down an inclined plane of slope angle 43.8 ° with a constant velocity. It is then projected up the same plane with an initial speed 3.10 m/s. How far up the incline will the block move before coming to rest? The attempt at a...
  32. B

    Block on an Incline with Varying Elevation

    Homework Statement Part one: A block is at rest on an inclined plane whose elevation can be varied. The coefficient of static friction is μs= 0.390, and the coefficient of kinetic friction is μk= 0.190. The angle of elevation θ is increased slowly from the horizontal. At what value of θ does...
  33. L

    Block sliding down an incline then collides with another block question.

    Homework Statement In the diagram below, a block of mass M=17 kg slides down a frictionless inclined plane and collides elastically with another block of mass m=4 kg. If the mass at the top of the wedge is initially at a height of 6 m above the horizontal plane, what is the velocity of m after...
  34. B

    Newton Laws/Dynamics: 3 Masses on an incline

    Mu1 is the friction coefficient , I'm sure I did it wrong because I got the acceleration isn't dependent on it, and it doesn't make sense. disregard the axis in the drawing - it's for another question. Homework Statement Find an expression for the acceleration of the system when there is...
  35. Z

    Acceleration of two packages on an incline

    Homework Statement Two packages at UPS start sliding down a 20 degree incline. Package A has a mass of 5kg and a coefficient of friction of 0.20. Package B has a mass of 10kg and a coefficient of 0.15. Package A is in front of Package B according to a diagram given. The distance between...
  36. U

    Block sliding down an incline plane with a cord connected to a cylinder.

    Homework Statement A cord connected at one end to a block which can slide on an inclined plane has its other end wrapped around a cylinder resting in a depression at the top of the plane as shown in the figure. Determine the speed of the block after it has traveled 1.70 m along the plane...
  37. U

    Force on pedals; cyclist up incline

    Homework Statement A cyclist intends to cycle up a 14-degree inclined hill whose vertical height is 120 m. Assuming the mass of bicycle plus person is 75 kg a) Calculate how much work is done against gravity b) A complete revolution of the pedals moves the bike 5.10 m along its path...
  38. T

    Finding the Normal Force of a block on an incline experiencing centripetal force

    Homework Statement When the sliding along a horizontal circular path on the inside of a friction-free cone, the magnitude of the normal force (use the diagram) 1. is greater than mg, always. 2. is equal to mg. 3. may be greater than mg. 4. is less than mg, always. 5. may be less than...
  39. S

    What Is the Impact of Friction on Acceleration in a Dual-Mass Pulley System?

    Homework Statement Two blocks with equal masses m1=m2=5kg are connected via a pulley, as shown. Take \mu = 0.25. Find the acceleration given that a) m1 is moving down, b)m1 is moving up. If m2=6 kg for what values of m1 will the pair move att constant speed? Homework Equations F=ma...
  40. H

    How far along the incline is the highest point from the release point?

    Homework Statement A block with mass m=2.00kg is placed against a spring on a frictionless incline with angle θ=30.0°. The spring, with spring constant k=19.6N/cm, is compressed 20.0cm and then released. Homework Equations How far along the incline is the highest point from the release...
  41. B

    Calculating Change in Kinetic Energy for a Crate Pulled Up an Incline

    A crate is pulled by a force (parallel to the incline) up a rough incline. The crate has an initial speed shown in the figure below. The crate is pulled a distance of 9.17 m on the incline by a 150 N force. The acceleration of gravity is 9.8 m/s2 . a) What is the change in kinetic energy...
  42. X

    Why weight on an incline is different?

    Hey guys, first post here... So, I'm having an issue comprehending this topic: Let's say you have a box which weighs 3 N, and you place a 7 kg block on top of it. So, since the block is laying on a horizontal plane, the weight is mg, or 6*10=60 N. Total weight=60+3=63 Let's say you have an...
  43. A

    Simple Incline Problem: Acceleration of a Block on a Wedge - Solution Attempt

    Homework Statement A 6kg block "B" rests as shown(refer attachment) on the upper surface of a 15 Kg wedge "A". Neglecting friction, determine immediately after the system is released from rest, a)The acceleration of A b)The acceleration of B relative to A. Homework Equations F = maThe Attempt...
  44. J

    Solving for g and COF on incline plane

    Homework Statement The assignment is for a lab, we were to take an incline plane, and push a cart up the plane and measure the acceleration (using software). We need to use the difference in the accelerations (when the cart is moving up the plane and then back down) to find of the force of...
  45. S

    Finding perpendicular force on incline plane.

    Homework Statement I'm having a lot of trouble trying to figure out this problem, any help would be great. The coefficient of static friction between a 3 Kg box and a 35 degree incline ramp is 0.3. What minimum force F perpendicular to the incline must be applied to the box to...
  46. B

    Test whether constant incline is constant acceleration

    1. A car rolls down such an incline from rest, starting at different positions on the incline. If the car coasts distances of .7430036cm, .9169641cm, 2.025999cm, and 1.61088cm, starting from rest each time and requires respective times of 3.5 sec, 7 sec, 7.25 sec, and 7.75 sec, is there...
  47. J

    Displacement of spring of a block going down an incline

    Homework Statement An inclined plane of angle θ = 20.0° has a spring of force constant k = 455 N/m fastened securely at the bottom so that the spring is parallel to the surface as shown in the figure below. A block of mass m = 2.71 kg is placed on the plane at a distance d = 0.330 m from the...
  48. S

    Sled pulled up incline at an angle with friction

    Homework Statement A child pulls a 3.6 kg sled at 25 degrees to a slope that is 15 degrees to the horizontal, as in the figure. The sled moves at a constant velocity when the tension is 16 N. What is the acceleration of the sled if the rope is released? Homework Equations F=ma...
  49. T

    Finding the Coefficient of friction on an incline plane

    I need to find the coeffcient of friction on an incline plane. I need the equation to find the coefficient for any givien angle. It part of a lab where I'm required to create the procedure and am stuck with how to create the equation. We can use a protractor or trigonomic functions to find the...
  50. U

    Mass on wedge on incline problem

    Homework Statement The problem is provided in the pdf attachment Homework Equations I know how to solve frictionless problems with a single mass on an incline but this is just too advanced for me. (especially with two inclines of different angles) The Attempt at a Solution I drew...
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