A spring with a force constant of 140 N/m is used to push a 0.28 kg block of woo

Question

A spring with a force constant of 140 N/m is used to push a 0.28 kg block of wood against a wall, as shown in the figure (Eigure 1) Find the minimum compression of the spring needed to keep the block from falling, given that the coefficient of static friction between the block and the wall is 0.50. Express your answer using two significant figures. Does your answer to part A change if the mass of the block of wood is doubled? Yes No Explain Essay answers are limited to about 500 words (3800 characters maximum, including spaces)

Explanation / Answer

Part a)Force of friction =uN = ukx

To keep the block steady ukx= mg so 0.5×140× x=0.28×9.8 eq......1

X=0.039m

Part b) Yes answer wil change as we can see from eq1 x depends upon mass of the block directly so if the mass of the block doubled x will also double keeping rest the things constant.

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