= A particle of mass 10 gm moves along a line, acted on by a force...

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= A particle of mass 10 gm moves along a line, acted on by a force F N which varies according to the law F = 8 x 10-4 cos 2t, where t is the time in seconds. At time t 0 it starts from rest at a point O of the line. Draw graphs showing the variation of the force, the velocity and the distance from O in the subsequent motion, and find at what times the rate of working of the force is greatest. = A particle of mass 10 gm moves along a line, acted on by a force F N which varies according to the law F = 8 x 10-4 cos 2t, where t is the time in seconds. At time t 0 it starts from rest at a point O of the line. Draw graphs showing the variation of the force, the velocity and the distance from O in the subsequent motion, and find at what times the rate of working of the force is greatest.