Thursday
April 17, 2014

Homework Help: Physics

Posted by Rachel on Wednesday, February 27, 2013 at 8:46pm.

In the figure below, a small block of mass m = 0.034 kg can slide along the frictionless loop-the-loop, with loop radius 8 cm. The block is released from rest at point P, at height h = 7R above the bottom of the loop. (For all parts, answer using g for the acceleration due to gravity, and R and m as appropriate.)

(a) How much work does the gravitational force do on the block as the block travels from point P to point Q?


J

(b) How much work does the gravitational force do on the block as the block travels from point P to the top of the loop?
J

(c) If the gravitational potential energy of the block-Earth system is taken to be zero at the bottom of the loop, what is the potential energy when the block is at point P?


J

(d) What is the potential energy when the block is at point Q?
J

(e) What is the potential energy when the block is at the top of the loop?


J

(f) If, instead of being released, the block is given some initial speed downward along the track, do the answers to (a) through (e) increase, decrease, or remain the same?
increase
decrease
remain the same

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

physics - A small block on a frictionless horizontal surface has a mass of 2.50×...
physcs - A small block of mass m1 = 0.500 kg is released from rest at the top of...
Anyone ??? Physics - In the figure below, block 1 of mass m1 = 3.0 kg and block ...
Physics - VERTICAL SPRING A spring of negligible mass, spring constant k = 89 N/...
physics - A small cube of mass m1= 2.0 kg slides down a circular and ...
Physics help needed - In the figure below, block 1 of mass m1 = 3.0 kg and block...
physics - A small cube of mass m1= 1.0 kg slides down a circular and ...
Physics Classical Mechanics Help ASAP - A small cube of mass m1= 1.0 kg slides ...
physics - In the Figure the pulley has negligible mass, and both it and the ...
Physics - In the figure below, two blocks are connected over a pulley. The mass ...

Search
Members