A 3.230 kg block of wood rests on a steel desk. The coefficient of static friction between the block and the desk is ?s=0.555 and the coefficient of kinetic friction is ?k=0.205. At time ?=0, a force ?=10.8 N is applied horizontally to the block. State the force of friction applied to the block by the table at times ?=0 and ?>0. ?=0  ?>0 N Consider the same situation, but this time the external force ? is 21.8 N. Again, state the force of friction acting on the block at times ?=0 and ?>0. ?=0 N ?>0 N

University Physics Volume 1
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ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
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A 3.230 kg block of wood rests on a steel desk. The coefficient of static friction between the block and the desk is ?s=0.555 and the coefficient of kinetic friction is ?k=0.205. At time ?=0, a force ?=10.8 N is applied horizontally to the block.

State the force of friction applied to the block by the table at times ?=0 and ?>0.

?=0  ?>0 N

Consider the same situation, but this time the external force ? is 21.8 N. Again, state the force of friction acting on the block at times ?=0 and ?>0.

?=0 N ?>0 N

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