Determining Speed of Toy at Top of Loop-the-Loop

  • Thread starter Thread starter dranseth
  • Start date Start date
  • Tags Tags
    Speed
AI Thread Summary
To determine the speed of a toy car at the top of a loop-the-loop, the forces acting on it include gravity and the normal force. At the critical point just before losing contact with the track, the normal force approaches zero. The gravitational force must provide the necessary centripetal force to keep the car on the track. The mass of the toy is 100g, and the loop has a diameter of 0.5m, which can be used to calculate the required speed. Understanding these forces is crucial for solving the problem effectively.
dranseth
Messages
87
Reaction score
0

Homework Statement




A toy with a mass of 100g is going through a loop-the-loop with a diameter of .5m. How fast must the car be moving at the top of the loop in order to not fall.




The Attempt at a Solution



At the top of the loop, there is a normal force (Fn) and the force of gravity (Fg). I'm not sure how to do this. Do I neglect one of the forces? Set one to zero, or what?
 
Physics news on Phys.org
What happens to the normal force when the car is just about to lose contact with the track?
 
Fn approaches 0. Thanks.
 

Thread 'Rolling without slipping on a curved surface'

Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
View full post »

Thread 'Struggling to understand the concept of this question (ice cube in water optics question)'

TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
View full post »

Similar threads

Would a marble need the same speed as a car at the bottom of a vertical loop?
Replies
7
Views
2K
Loop problem with skier on ramp going into a loop-the-loop
Replies
13
Views
2K
Understanding the Minimum Speed to Keep Carriage on Tracks in a Loop
Replies
5
Views
2K
Toy car executing a vertical loop
Replies
2
Views
3K
What is the induced magnetic force on this closed current loop?
Replies
12
Views
2K
Speed at the top of an elliptical roller coaster loop
Replies
4
Views
3K
Circular motion - ball in a loop
Replies
19
Views
4K
Solving for Min Speed on Loop-the-Loop Rides
Replies
3
Views
2K
Centripetal Forces and Roller Coasters
Replies
1
Views
2K
Proper use of inequality symbols in equations to do with circular motion
Replies
2
Views
1K

Hot Threads

Recent Insights

Back
Top