Initially a stationary wooden block with a mass of 2 kg is pulled horizontally along a table with a time dependent force F(t)i. The coefficients of static and kinetic friction between the block and the table are 0.5 and 0.25 respectively. F(t) as a function of time is show. Taking g =10m/s^2
The graph of friction force (f) with time will be
The graph of friction force (f) with time will be
Answers & Comments
Answer:
It must be 3rd option because when the external force starts increasing and the object will start moving the limiting friction will be converted to kinetic friction which is slightly less than limiting friction hence (3)