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. M

    Train on 4.4 Incline: Solving for Momentary Rest

    A train is traveling up a 4.4 incline at a speed of 3.10 when the last car breaks free and begins to coast without friction. How long does it take for the last car to come to rest momentarily? The way I approached it that I reduced the speed to its x and y components. But I don't know what...
  2. F

    Two boxes sliding down incline

    Hello, I have two boxes with the same mass sitting on an incline: http://img31.imageshack.us/img31/97/boxesy.png Uploaded with ImageShack.us The coefficient of kinetic friction between A and the incline is greater than the coefficient of kinetic friction between B and the incline...
  3. S

    Two blocks tied with massless rope sliding down an incline

    Homework Statement On 20 degree incline, there are two blocks tied together with a rope, sliding down. the block on the top has mass of 2.0 kg (m1) and u_k1(coefficient of kinetic friction for block 1) = .30 the block on the bottom of the incline has mass of 3.0 kg (m2) and u_k2 = .20 What is...
  4. W

    Pulling on a rope attached to a box: Newton's Laws and Incline Planes

    Homework Statement A student decides to move a box of books into her dormitory room by pulling on a rope attached to the box. She pulls with a force of 130.0 N at an angle of 15.0° above the horizontal. The box has a mass of 25.0 kg, and the coefficient of kinetic friction between box and...
  5. A

    Friction Problem - block on an incline (serway)

    Hi, I've been trying to nail this problem but I'm not sure if I'm stating it correctly: 1. "A block weighing 75.0 N rests on a plane inclined at 25.0° to the horizontal. A force F is applied to the object at 40.0° to the horizontal, pushing it upward on the plane. The coefficients of static...
  6. S

    Finding the speed of a block moving on an incline

    I apologize i do not have a picture to show. 1. Homework Statement [/b] A block of mass 250g is at rest on an incline that makes an angle of 30 degrees to the horizontal. The coefficient of kinetic friction between the block and the plane is 0.10. The block is attached to a second block...
  7. R

    Two objects on an incline with friction, calculate acceleration? B

    Homework Statement Body A in Fig. 6-33 weighs 97 N, and body B weighs 91 N. The coefficients of friction between A and the incline are μs = 0.48 and μk = 0.25. Angle θ is 47°. Let the positive direction of an x-axis be down the slope. What is the acceleration of A if A is initially (a) at...
  8. T

    Acceleration on incline (w. Friction)

    Homework Statement - Taken directly from the homework - - Attachment has the diagram - Body A in Fig. 6-33 weighs 100 N, and body B weighs 78 N. The coefficients of friction between A and the incline are μs = 0.54 and μk = 0.22. Angle θ is 29°. Let the positive direction of an x-axis...
  9. M

    Is Static Friction Necessary on an Incline When Motion Stops?

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  10. D

    What is the coefficient of kinetic friction for the incline?

    Homework Statement A block(7 kg) is released from rest on an inclined plane of 23 degrees and moves 2.8 m during the next 4.7 s. The acceleration of gravity is 9.8 m/s^2. What is the magnitude of the acceleration of the block? What is the coefficient of kinetic friction for the incline...
  11. J

    How Long Does It Take a Block to Slide Down a Frictional Incline?

    Need help with Incline Plane Problem! Homework Statement A 10 kg block of ice slides down a ramp 20 m long, inclined at 10 degrees to the horizontal. a) If the ramp is frictionless, what is the acceleration of the block of ice? (I was able to do this question the answer is 1.7 m/s²) b) If...
  12. W

    What is the Required Horizontal Force for a Shopping Cart on an Inclined Plane?

    Homework Statement A shopper pushes a 7.3 kg shopping cart up a 13° incline, as shown in Figure 5-24. Find the magnitude of the horizontal force, F, needed to give the cart an acceleration of 1.67 m/s2. Figure 5-24 Homework Equations All forces equations. The Attempt at a...
  13. U

    Solving a Frictionless Incline Problem: Calculating Normal Force

    The problem states: A horizontal force of 77 N pushes a 12 kg block up a frictionless incline that makes an angle of 60 degrees with the horizontal. What is the normal force that the incline exerts on the block? After drawing the FBD I can see there are only 2 forces acting in the Y...
  14. D

    Mass on a friction less incline. What force is needed to stop the block from sliding.

    Homework Statement A block with mass 10kg rests on a smooth, friction less ramp that is inclined at an angle of 45 degrees with the ground. How much force must be applied in the direction parallel to the ground to prevent the block from sliding down the ramp? IT TURNS OUT THAT THE...
  15. D

    Mass on a friction less incline. What force is needed to stop the block from sliding.

    Homework Statement A block with mass 10kg rests on a smooth, friction less ramp that is inclined at an angle of 45 degrees with the ground. How much force must be applied in the direction parallel to the ground to prevent the block from sliding down the ramp? IT TURNS OUT THAT THE...
  16. M

    Solving for Acceleration in an Incline Plane Problem: m1=4.50kg, m2=2.80kg

    Homework Statement A block of mass m1 = 4.50 kg on a frictionless inclined plane of angle 30.0° is connected by a cord over a massless, frictionless pulley to a second block of mass m2 = 2.80 kg hanging vertically. What is the magnitude of the acceleration of each block? Homework...
  17. A

    Tension in rope between blocks on an incline

    1. Two blocks made of different materials connected together by a thin rope, slide down a plane ramp inclined at an angle θ to the horizontal (block B is above block A). The masses of the blocks are mA and mB, and the coefficients of friction are μA and μB. If μA < μB, find the tension in terms...
  18. M

    Train travelling uphill at s.7s degree incline, find friction coefficient

    Homework Statement A train is traveling at 3.73 degree incline at a speed of 3.25 m/s, when the last car breaks free and begins to coast without friction. (i) How long does it take for the last car to come to rest momentarily? (ii) How far did the last car travel before (momentarily)...
  19. C

    Skater rolling down an incline

    Homework Statement A skateboarder + skateboard has a combined mass of 70 kg. How much force is required to prevent them from rolling down a 15 degree incline? Homework Equations Weight = 70kg * 9.81m/s^2 Normal = cos 15 * W Friction = sin 15 * W The Attempt at a Solution I...
  20. D

    Elastic Potential Energy of a system with 2 springs and 1 mass on an incline

    Homework Statement IV. The block in the figure has a mass of 0.150 kg, and the surface it is on is frictionless. The force constant of the upper spring is 250 N/m, and the force constant of the lower spring is 450 N/m. The upper spring is initially compressed by a distance of 0.10 meters. The...
  21. P

    Accelerating Incline - Conditions to prevent slipping

    Homework Statement (Kleppner & Kolenkow - Introduction to Mechanics - 2.17) The first attached image shows a box on an incline which is accelerated at a rate a meters per second squared. \mu is the coefficient of friction between the box and incline surface. The questions are in the image...
  22. T

    Motion on an incline plane (detailed)

    Hey, folks! I've been working on this one problem for the past little bit. It has been giving me a lot of trouble and I think i just need a pointer or two on how to go about solving it. http://i.imgur.com/nTGVz.jpg"Homework Statement It's not the best image, but it gives the basic idea. I...
  23. V

    Compute the terminal speed of a car as it coasts down the incline

    Homework Statement A Toyota Prius has a total mass of 1520 kg when carrying passengers. The driver shifts the car into neutral and coasts down a long, straight section of road with a grade of 9% (the term "grade" means slope). The car eventually reaches a terminal speed. Ignoring the effects of...
  24. J

    Very interesting incline problem

    Homework Statement Find the acceleration of the system. Friction constant of incline is 0.2 Homework Equations Force of friction = 0.2 * 7 * 9.8 * cos30 = 11.88N Force of gravity pulling down 7kg weight = 7 * 9.8 * sin30 = 34.3N Force of gravity pulling down 4kg weight = 4 *...
  25. W

    Find the Kinetic Frictional Force on a 9kg Block on an Incline

    A wooden block of mass m = 9 kg starts from rest on an inclined plane sloped at an angle q from the horizontal. The block is originally located 5m from the bottom of the plane. If the block, undergoing constant acceleration down the ramp, slides to the bottom in t = 2 s, and q = 30°, what is the...
  26. S

    How Does an Incline Affect Truck Deceleration?

    Not a homework question for me but one i was asked and would like to know how? A truck traveling at 100km/h (27.7m/s) goes up a ramp inclined at 30', If it takes the truck 10 seconds to stop how far does the truck travel (m)? Working out for a straight line is easy however i am unsure of...
  27. D

    Calculating Frictional Force on a Rolling Sphere: Incline Physics Problem

    Homework Statement A solid sphere of uniform density starts from rest and rolls without slipping down an inclined plane with angle θ = 24°. The sphere has mass M = 8.0 kg and radius R = 0.19 m. The coefficient of static friction between the sphere and the plane is μ = 0.64. What is the...
  28. Y

    Calculating tension of objects with a pulley on an incline

    Homework Statement Calculate the tension in the cable connecting the two masses. Assume all surfaces are frictionless. http://tinypic.com/r/20jg36s/7 Homework Equations The Attempt at a Solution I tried to begin the solution but came out with a negative acceleration (-2m/s^2)...
  29. D

    Newton's Second Law Incline (constant accel)

    Newton's Second Law...Incline (constant accel) Homework Statement Given: mass of block of 5.0 kg incline angle is 37theta coeff kinetic friction is 0.50 What is the force, directed up the inline, required to move the block at constant speed up the incline? The...
  30. P

    Calculating Speed of Bowling Ball Down Incline

    Homework Statement a bowling ball with a mass of 5.45kg and a radius of .191m starts from the rest at a height of 1.8m and rolls down a 22.3m slope. what is the translational speed of the ball when it leaves the incline. Homework Equations E=mgh +1/2mv^2+1/2Lw^2 The Attempt at a...
  31. D

    How Does Friction Affect the Final Velocity of a Block on an Incline?

    A block m1 with mass 7 kg moves up an inclined plane with an initial velocity v=4.7 m/s. The inclined plane is at an angle of theta = 45 degrees from the horizontal. The coeff. of kinetic friction between the block and the incline is 0.25. What is the block's velocity when it has traveled a...
  32. P

    A block moving up a frictionless incline

    Homework Statement A block of mass 12 kg is projected up a frictionless incline with an initial velocity of 8m/s. It just reaches a point B and then slides down again. A) what is the potential energy of the block at B if its potential energy at A is taken as zero? b) what is the...
  33. R

    Conservation of energy of object rolling down incline

    Homework Statement A marble of mass M and radius R rolls without slipping down the track on the left from a height h1, as shown below. The marble then goes up the frictionless track on the right to a height h2. Find h2. (Use the following as necessary: M, R, and h1.) http://imgur.com/sZIyQ...
  34. M

    Non slip ball down an incline of theta

    non slip ball down an incline of theta! Homework Statement A uniform solid sphere rolls down an incline without slipping. If the linear acceleration of the center of mass of the sphere is 0.16g, then what is the angle the incline makes with the horizontal? Homework Equations F=ma...
  35. T

    Sphere Climb Incline: Friction, Acceleration, Energy

    Homework Statement http://i.imgur.com/oMpaG.png Homework Equations The Attempt at a Solution 1)Friction force always in opposite direction with v? 2)At highest point acceleration is 0? 3)Should larger than because conservative of energy? Thank you
  36. T

    Sphere on Incline Homework: Solve Torque Equation

    Homework Statement http://i.imgur.com/jL3T9.png Homework Equations Torque = Fr The Attempt at a Solution 1)I write an equation which is Mgsin(theta) - Mg cos(theta)miu = Ma Didn't work 2)Sorry,but I don't understand what slipping means?
  37. G

    Force required down an incline.

    Homework Statement The co-efficient of kinetic friction for a 22kg bobsled on a track is 0.10. What force is required to push it down a 6 degree incline and achieve a speed of 60km/h at the end of 75m. Homework Equations Ffr=uFn v^2=2a(x) F=ma The Attempt at a Solution...
  38. K

    Physics friction incline question

    Homework Statement Block B on a frictionless table top (1.5kg) is connected by a cord to block A (3.8kg) with friction on an incline of 40degrees above the horizontal. Block B is being pulled at and angle 15degrees above the horizontal Block A is moving up the incline at constant...
  39. K

    Block up an incline and then how far it goes. HARD

    Homework Statement The spring in the figure has a spring constant of 1300 N/m . It is compressed 13.0cm , then launches a 200g block. The horizontal surface is frictionless, but the block's coefficient of kinetic friction on the incline is 0.180. What distance does the block sail through...
  40. D

    Finding Force pulling an Object Up an incline

    Homework Statement How much force does it take to move M1 up the incline plane and what is the net force. This isn't exactly a homework equation this picture is from my last physics test where we were given M1 = 10kg, the coefficients of frictions with us = .8 and uk = .3 our job was to...
  41. M

    How Does Mass Affect Velocity on an Incline?

    Homework Statement Hey guys I recently performed an experiment where we attempted to investigate the effect of the: 1) Mass of the object moving down the incline and 2) Vertical height of the incline on the velocity of the object at the bottom of the incline (using conservation of...
  42. B

    Displacement of spring, block down an incline

    Homework Statement An inclined plane of angle θ = 20.0° has a spring of force constant k = 460 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 = 2.55 kg is placed on the plane at a distance d = 0.288 m from the...
  43. D

    Work on an incline with friction.

    Okay, I am stuck on this problem that comes in two parts. Please help! Thanks! Homework Statement Part 1) Daphne pushes a 22.0 kg crate up a frictionless 30.0 degree incline a distance along the incline of 10.0 m at constant velocity. How much work did Daphne do? Part 2) Daphne now pushes a...
  44. E

    Clarification on this specific problem (work done on incline plane)

    Homework Statement A block of weight sits on a plane inclined at an angle \theta as shown. (Intro 1 figure) The coefficient of kinetic friction between the plane and the block is \mu. What is the work done by the applied force of magnitude ? Express your answer in terms of some or all of...
  45. C

    Speed of a ball rolling down an incline

    Homework Statement A hollow basketball rolls down a 30\circ incline. If it starts from rest, what is its speed after it's gone 8.4 m along the incline? Homework Equations v=\omegaR The Attempt at a Solution I don't really know where to start with this. I've done similar problems, but I was...
  46. E

    A car placed on incline and a mass placed on the car

    Homework Statement The car of mass M is sliding on the incline. A mass of m is placed as shown. There is friction between m and M in the vertical surface of M . The incline is frictionless. System is released, and it is observed that m moves parallel to the incline. We are asked to find the...
  47. J

    Spring and Incline Plane (Conservation of Energy Problem)

    Homework Statement MP: 10.71 A 25 kg box slides 4.0 m down the frictionless ramp shown in the figure , then collides with a spring whose spring constant is 250 N/m. What is the maximum compression of the spring? ds=2.5m For what compression of the spring does the box have the maximum speed...
  48. D

    What Forces Act on a Motorcyclist Accelerating Up an Incline?

    Homework Statement A motorcycle and 60.6 kg rider accelerate at 3.5 m/s2 up a ramp inclined 7.3° above the horizontal. What are the magnitude of (a) the net force on the rider and (b) the force on the rider from the motorcycle?Homework Equations F=ma Fg= mg 3. The Attempt at a Solution...
  49. ThomasMagnus

    Coefficient of friction-Puck travelling up an incline

    Coefficient of friction--Puck traveling up an incline Homework Statement A hockey puck is moving at 13m/s when it starts climbing an incline. It travels 7.1m from the base of the incline before sliding back down the slope, as shown Find the coefficient of friction between the puck and the...
  50. Z

    Incline Plane Physics Problem: Understanding the Sum of Forces - Homework Help

    Homework Statement Homework Equations Sum of F=0The Attempt at a SolutionToo much work to put, but I pretty much know how to solve it, just need clarification. I almost got the right answer, was off by just a tad.
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