Minumum velocity when entering a loop?

  • Thread starter Thread starter davidpac
  • Start date Start date
  • Tags Tags
    Loop Velocity
Click For Summary
To determine the minimum speed required for an object to complete a loop with a 2-meter diameter, it is essential to consider the forces acting on the object at the top of the loop. The gravitational force must be balanced by the centripetal force, which leads to the conclusion that the minimum speed at the top of the loop should be at least 5 m/s to maintain circular motion. Additionally, applying conservation of energy principles from the bottom to the top of the loop confirms that the object must have sufficient kinetic energy to convert into potential energy. The correct answer to the minimum speed question is therefore 5 m/s. Understanding these principles is crucial for solving similar physics problems involving loops and motion.
davidpac
Messages
4
Reaction score
0
A small object goes down a ramp and through a loop with a 2 metre diameter. In order to complete the loop, what is the minimum speed the object must have when reaching the bottom of the ramp? (consider there is no friction)

a) 5 m/s
b) 0 m/s
c) 3 m/s
d) 7 m/s


I'm a bit clueless on this one, I think a minimum speed has to be stronger then the gravity force, but non of those values make sense to me.
 

Attachments

  • imagem4.png
    imagem4.png
    2.4 KB · Views: 414
Physics news on Phys.org
Use (a) Fnet = ma at the top of the circle and
(b) conservationof energy at top and bottom of the circle.
 

Similar threads

Loop problem with skier on ramp going into a loop-the-loop
  • · Replies 13 ·
Replies
13
Views
2K
Undergrad Two recent tests of loop quantum gravity theory
  • · Replies 15 ·
Replies
15
Views
5K
A boy, a cart, a loop , an icecream-cone
  • · Replies 2 ·
Replies
2
Views
2K
Understanding the Minimum Speed to Keep Carriage on Tracks in a Loop
  • · Replies 5 ·
Replies
5
Views
2K
Graduate The effect of perpendicular wind at channel inlet
  • · Replies 12 ·
Replies
12
Views
1K
Non conservative energies on a Loop
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad Escape velocity near a black hole: Newtonian or Special Relativity?
  • · Replies 17 ·
Replies
17
Views
2K
Why Can't Conservation of Energy Be Used to Solve the Loop Problem in Physics?
  • · Replies 3 ·
Replies
3
Views
2K
Solving for Min Speed on Loop-the-Loop Rides
  • · Replies 3 ·
Replies
3
Views
2K
Loop-the-Loop and velocity problem
  • · Replies 8 ·
Replies
8
Views
3K