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A block of mass 1kg kept at rest on a ho...

A block of mass 1kg kept at rest on a horizontal rough floor is subjected to a horizontal force at time t=0 ,given by `vec F=(2sin(omega t)hat i)N` where `omega` is a positive constant and `t` is time in seconds. The coefficient of friction between the block and the floor is 0.25The acceleration of the block will be:
A) positive and uniform
B) positive and non-uniform
C) zero
D) depending on the value of ω

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