Questions
A particle of mass 0.2 kg is moving along x-axis and its displacement is given by , where t is time in second. Work done on the particle in 4 sec is
detailed solution
Correct option is D
x=2t2∴ V=dxdt=4t m/s. At t = 4s,V=16 m/sBy work energy theorem, work done = Kf−Ki=12×0.2×162−0J = 256 JouleTalk to our academic expert!
Similar Questions
A block of mass 1 kg is at rest on a horizontal table. The coefficient of static friction between the block and the table is 0.5. The magnitude of the force acting upwards at an angle of 60° from the horizontal that will just start the block moving is
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