A 5.740 kg block of wood rests on a steel desk. The coefficient of static friction between the block and the desk is µ, = 0.555 and the coefficient of kinetic friction is uy = 0.305. At time t 0, a force F = 19.2 N is applied horizontally to the block. State the force of friction applied to the block by Us,k the table at times t = 0 and t > 0. t = 0 N t > 0 Consider the same situation, but this time the external force F is 38.8 N. Again, state the force of friction acting on the block at times t = 0 and t > 0. t = 0 t > 0 N

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A 5.740 kg block of wood rests on a steel desk. The coefficient of static
friction between the block and the desk is u,
= 0.555 and the coefficient of
kinetic friction is µy = 0.305. At time t = 0, a force F = 19.2 N is applied
F
horizontally to the block. State the force of friction applied to the block by
Us,k
the table at times t = 0 and t > 0.
t = 0
t > 0
N
Consider the same situation, but this time the external force F is 38.8 N. Again, state the force of friction acting on the block at
times t = 0 and t > 0.
%3D
t = 0
t > 0
N
Transcribed Image Text:A 5.740 kg block of wood rests on a steel desk. The coefficient of static friction between the block and the desk is u, = 0.555 and the coefficient of kinetic friction is µy = 0.305. At time t = 0, a force F = 19.2 N is applied F horizontally to the block. State the force of friction applied to the block by Us,k the table at times t = 0 and t > 0. t = 0 t > 0 N Consider the same situation, but this time the external force F is 38.8 N. Again, state the force of friction acting on the block at times t = 0 and t > 0. %3D t = 0 t > 0 N
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