A Wooden block weighing 7 N is at rest on top of a wooden desk. The coefficient

Question

A Wooden block weighing 7 N is at rest on top of a wooden desk. The coefficient of static friction between the block and the desk is 0.51. Find the minimum horizontal force required to move the block if the block is partially supported by a vertical string under a tension of 4 N. 0.51 N 2.04 N 7.00 N 1.53 N 4.00 N A pitcher throws a baseball with an initial velocity of 45.1 m/s, directed horizontally. How far does the ball drop vertically by the time it crosses the plate 18.0 m away? 0.400 m 0.625 m 0.781 m 10345 m 2.712 m

Explanation / Answer

Normal reaction=Weight-Spring force=7-4=3N

Maximum friction force=N=0.51*3=1.53N

d) is correct.

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