Sorry for the poor diagram. Here are the givens for the problem. m = 10 kg k = 1

Question

Sorry for the poor diagram.

Here are the givens for the problem.

m = 10 kg

k = 100 N/m (the squiggly line thing on the pulley system is the spring)

There is no friction.

The angle of the ramp is 25 degrees.

a) F is the force which keeps the mass and spring and pulley system stationary. Find the extension in the spring when block m is stationary.

b) F is now 60 N. Find the velocity of m after F has moved point A (which is at the point where F is acting on at the end of the pulley) 0.5 m in the direction of the arrow.

Explanation / Answer

Due to the time limit. I just brief explain it to you.

a, draw the free body diagram for the block. if the there is a angle on the slope, the force on the slope up direction should be mgsin.because there is two string pull the block, the force will spilt into two part. F on the spring is sinmg/2

b.still use the free body dragram, but now you have net force. find the net force, use a= f/m, where f is net force. then, use one of the v and a relation formal to solve the problem

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