Purchase Solution

A block of mass m is released from rest at a height R above

Not what you're looking for?

Ask Custom Question

A block of mass m is released from rest at a height R above a horizontal surface.
The acceleration due to gravity is g. The block slides along the inside of a frictionless circular hoop of radius R.

A.Which expression would give the speed of the block at the bottom of the hoop and why?

1.v=mgR
2.v=mg/2R
3.v^2=g^2/R
4.v^=2gR.

B. What is the magnitude of the normal force exerted on the block by the hoop when the block has reached the bottom?

See the attached file.

Attachments
Purchase this Solution

Solution Summary

The solution provides detailed discussions and explanations for the problem.

Solution Preview

From position 1 to 2, potential energy has changed into kinetic energy.
Position 1: Potential energy = mgR
Position 2 (bottom of hoop): Kinetic ...

Purchase this Solution


Free BrainMass Quizzes
Classical Mechanics

This quiz is designed to test and improve your knowledge on Classical Mechanics.

Introduction to Nanotechnology/Nanomaterials

This quiz is for any area of science. Test yourself to see what knowledge of nanotechnology you have. This content will also make you familiar with basic concepts of nanotechnology.

Intro to the Physics Waves

Some short-answer questions involving the basic vocabulary of string, sound, and water waves.

Variables in Science Experiments

How well do you understand variables? Test your knowledge of independent (manipulated), dependent (responding), and controlled variables with this 10 question quiz.

Basic Physics

This quiz will test your knowledge about basic Physics.