Questions
A block of mass 2 kg is placed on the floor. The coefficient of static friction is 0.4 A force F of 2.5 N is applied on the block as shown in fig. The force of
friction between the block and the floor is
detailed solution
Correct option is C
fs=μsR=μsmg =4×2×9⋅8=7⋅84NThe applied force is less than the limiting friction force. Hence under the applied force, the block does not move. So long, the block does not move, the adjustable friction force is always equal to the applied force. Thus the frictional force is 2.5 N.Similar Questions
A body of mass 2 kg is at rest on a horizontal table. The coefficient of friction between the body and the table is 0.3. A force of 5 N is applied on the body. The acceleration of the body is
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