Roller skating is traveling on surfaces with roller skates. It is a recreational activity, a sport, and a form of transportation. Roller rinks and skate parks are built for roller skating, though it also takes place on streets, sidewalks, and bike paths.
Roller skating originated in the performing arts in the 18th century. It gained widespread popularity starting in the 1880s. Roller skating was very popular in United States from the 1930s to 1950s, then again in the 1970s when it was associated with disco music and roller discos. During the 1990s, inline outdoor roller skating became popular. Roller skating has often been a part of Black and LGBT history in particular.
Sport roller skating includes speed skating, roller hockey, roller derby, figure skating and aggressive quad skate. It is also widespread as a hobby.
Homework Statement
The passengers in a roller coaster car feels 55% heavier than their true weight as the car goes through a dip with a 24m radius of curvature. What is the car's speed at the bottom of the dip?
Homework Equations
The Attempt at a Solution
I have no clue as to...
Homework Statement
A roller-coaster car has a mass of 1050 kg when fully loaded with passengers. As the car passes over the top of a circular hill of radius 19 m, its speed is not changing. (a) At the top of the hill, what is the normal force (using the negative sign for the downward...
A roller coaster car may be approximated by a block of mass m. The car, which starts from rest, is released at a height h above the ground and slides along a frictionless track. The car encounters a loop of radius R, as shown. Assume that the initial height h is great enough so that the car...
in an amusement park ride a cart of mass 300kg and carring four passangers each of mass 60kg is dropped from a vertical height of 120m alonga path that leads into a loop-the-loop machine of radius 30m. The cart then enters a straight stretch from A to C where friction brings it to rest after a...
Homework Statement
A roller coaster loop has a radius of 12 m. If the passengers are not to fall out at the top of the loop, what is the minium speed the car must have at the top.
Homework Equations
Fc = Fg-Fn
Fc= mv^2/r
Fg = mg
The Attempt at a Solution
I figure that for...
Can someone help explain the idea behind solving this roller support question. I have the answer, couldn't figure how to solve it. I would greatly appreciate the detail explanation...:rolleyes:
Homework Statement
A roller coaster car starts from rest and descends 40 m before rising 20 m to the top of a hill. The passenger of mass 75 kg at the top of the hill feels a normal force of 368 N. The radius of curvature of the hill is...?
Homework Equations
F = m * a
a = v^2/r...
Hey
How can i calculate the amount of energy/power required to accelerate my roller coaster on a flat track.
Mass=4500 approximate when loaded
Time=2.64secs to reach top speed
Distance=125m
Velocity=47.248ms-1
I know how to calculate it for a track that rises i can use M*G*H/Time
but my...
Homework Statement
A roller coaster goes through a vertical loop, the net force on the coaster is the least, where?
Homework Equations
The Attempt at a Solution
I said on the sides.
however it could be at the bottom, at the top, or the same all the way around.
i assumed...
Homework Statement
Consider a simple frictionless roller coaster. It begins from rest at x = 0 at a height of y = H. Then it drops into a dip, reaching a minimum at x = 100, with zero height (y = 0). Finally, it goes back up and reaches the crest of a small hill of height y = H/2 at x = 200...
Hi All -
Here's the problem I have:
A block of mass m slides down a frictionless track, then around the inside of a circular loop-the-loop of radius R. What minimum height h
must the block have to make a full run around the loop without falling off? The answer is to be given as a...
Homework Statement
The teacher screwed up and gave us a problem that he could not solve.
I am trying to solve it for fun.
A roller coaster has a cosine shape.
The coaster starts at the top (0 pi) with near 0 velocity
Friction is 0, and there is no air resistance.
Homework Equations...
Homework Statement
the roller coaster starts with the first hill being 50 m high. When the coaster gets to the lowest point, starting from the first hill, it has already entered the circular loop. The passengers should be subject to a maximum of 2.5 g's.
Figure out the maximum radius the...
Homework Statement
A roller coaster has a mass of 510kg when fully loaded with passengers. The radius at point A is 10.0 m and the radius at point B is 15.0 m.
-If the vehicle has a speed of 19.6 m/s at point A, what is the force exerted by the track on the car at this point? (N)
-What...
The question:
(I am given a diagram; I'll attempt to describe it here.)
Consider a frictionless, 12000-kg roller coaster that starts at rest at the top of a hill, point A, 95 m high. It goes all the way down the hill and coasts horizontally (for an unspecified distance) before reaching point...
Hey there. Say we have a roller coaster trail which is roughly circular.
When the roller coaster reaches the top of the trail, then the only forces acting on it are the force of gravity, the centripetal force, and the normal force, which are all acting downwards.
Thus, the net force acting...
We are to design the track for an induction roller coaster. To create an inital thrill, we want each passenger to leave the loading point with acceleration g along the horzontal track. To increase the thrill, we also want that first section of track to form a circular arc, so that the...
The passengers in a roller coaster car feel 50% heavier than their true weight as the car goes through a dip with a 20.0 m radius of curvature.
What is the car's speed at the bottom of the dip?I'm stuck on this problem. I understand that at the bottom they feel 1.5 times heavier. Other than...
4) The determined Wile E. Coyote is out once more to try to capture the elusive roadrunner. The coyote wears a new pair of Acme power roller skates, which provide a constant horizontal acceleration of 15 m/s2, as shown in Figure P3.73. The coyote starts off at rest 70 m from the edge of a cliff...
Hi, new at Physics so go easy.
My question is:
A roller coaster is traveling on a horizontal track at 20 m/s. What is its speed after climbing a hill 15m high? Ignore friction.
any help will be great.
hey every1... I'm really really stuck on this problem and unless i get it and a few others right I am going to fail my engineering statics course :( Any help would be apreciated so much...
The Question that goes with that diagram I've attatched is:
Determine the bending moment at a...
Circular Motion
Situation:
A concrete highway curve of radius 70m is banked at a 15 degree angle.
Question:
What is the max speed with which a 1500kg rubber-tired car can take this curve without sliding?
Feedback:
I learned that the static coeffiecient of friction of rubber on concrete...
here's the question
a roller coaster moves 85m horizontally, then travels 45m at an angle of 30.0 degrees above the horizontal. What is its displacement from its starting point?
can anybody help me do this?
hi there, I'm planning to take university physics in the fall, but I'm lousy at it and doing some practise problems in advance :( i was doing some loop problems, and I'm extremely confused and disheartened and was wondering if anyone could help me?
The set up is pretty simple:
- there is a...
I'm not sure if this question belongs to this forum or advanced phsyics.. but since I'm still in high school, I think this is the right forum.
I'm doing physics questions based on roller coaster and am just a little bit confused on how to answer some questions.
You know :
Mass of each...
Hey,
Can anyone show me a site that talks about the physics equations involved in the zero-g rolls of a roller coaster?
I know they are called heartline spins and resemble a barrel roll, but I need help with the physics equations.
Thanks!
A roller coaster car of mass 1216 kg slides on
a frictionless track starting at a distance 32 m
above the bottom of a loop 25 m in diameter.
The acceleration of gravity is 9.81 m/s^2
If friction is negligible, what is the magni-
tude of the force of the track on the car when
the car is...
A roller coaster gets over the first hill of height 50.0 meters moving less than 1 meter per second. Then would it stay with the track if it were not mechanically held on to it at the top of the loop the loop. (The top of the loop the loop is 35 meters and it goes 17.1 meters per second at that...
Roller coaster Vel. Initial=10m/s, Height initial=100m, and the mass of the coaster is 1000kg all at the starting point (*).
Have to find the speed of coaster at point A, point A's height is the same as the starting points, b is 1/2 of a's height, c's height is zero.
Coaster kinda looks like...
I’m having trouble with my physics lab this week. Here is the problem which we are trying to solve:
What is the minimum height at which you can release a ball in order for the ball to just make it around a loop?
The ideal situation for this would be to drop it from a height at which the normal...
A roller coaster car of mass 1500 kg starts a distance H = 25 m above the bottom of a loop 15 m in diameter (Figure 7-24). If friction is negligible, find the downward force of the rails on the car when it is upside down at the top of the loop.
Uhm iwell i figured out the KE and the PE at the...
This is another problem a buddy of mine and I cannot figure out if our life depended on it. Here's the question word for word:
A roller coaster track has a hill with a circular curve of radius 20 m. Find the speed of the roller coaster at the top of this hill.
Started by drawing a picture...
Show that a roller coaster with a circular vertical loop. The difference in your apparent weight at the top of the circular loop and the bottom of the circular loop is 6 g's-that is, six times your weight. Ignore friction. Show also that as long as your speed is above the minimum needed, this...
my question is about the Newton's laws:
1. if a car suddenly brakes all the objects in the car tends to move forward by a force but a balloon tends to move backward, why?
2. if we tie two strings in two sides of a weight and hang the weight by one string and slowly pull the other string...
**URGENT** "Slow Roller" Physics Project Help
Hi,
I'm new in the forum and my project partner and I need some help/ideas regarding what will yield us the best project in class.
The object is to create a "slow roller", AKA a device that will roll down the length of 1 meter at a 13 degree...
Two rollers have a belt that goes between them, like a conveyerbelt. The assembly stands vertical. The lowest of the rolls have a force that acts on its center, and downwards. My book says that this force F can be written as
F=S_1-S_2
where S are the forces that the belt produces as a...
i know and think that the when the mass inreases, the speed of the coaster does not change... this is according to researching on some sites simulators... it hinkt that's right...
and because the speed esont change, the time doesn't change?
but when i think about it more, I am nto sure...
When a roller coster does a loop, what part would the person feel the most force?
I rode a rollercoster several times and the time that I felt the most force was heading up towards the top of the loop. But the force felt throughout the loop should be constant right?
When a roller coster does a loop, what forces do we feel at the top of the loop?
I think it's only the normal force. There is MG acting downwards, and also the normal force of the rollercoster seat that is pushing towards the center of the coster.
Is this normal force the same as the...
A roller coaster car crosses the top of a circular loop-the-loop at twice the critical speed.
What is the ratio of the car's apparent weight to its true weight?
from my notes i have that Velocity_critical= squareroot ( r w / m)
v = sqrt(rw/m)
so what i did was multiply v times...
A car in a roller coaster moves along a track that consists of a sequence of ups and downs. Let the x-axis be parallel to the ground and the positive y-axis point upward. In the time interval from t=0 to t=4 s, the trajectory of the car along a certain section of the track is given by
(look...
Hi everyone,
I am currently doing a roller coaster project in school, where a marble must travel around a track of our design within certain dimensions. Easy right? Well, yes, but not since I plan on having the best roller coaster in the class. (the grades are put on a curve, best coaster...
I'm a gr 11 physics student at Ashbury College (Ottawa, Canada) and our class (in multiple teams) has been entered in a roller coaster contest, held by Wonderland. (A theme park in Ontario, Canada).
My friends and I are determined to win this contest, and I am sure that the ideas of those in...
Does anyone know anything about building roller coasters on Roller Coaster Tycoon? We have to build them in Physics and I'm stuck on finding the sum of PE and KE for the model.
I have a group depending on me.. and I have no idea where to begin with these problems... they're additional calculations connected with a rollercoaster project we're doing... our average friction is .0212 N if that is needed... someone please direct me to some solution you have no idea how much...