Questions
A body of mass 3 kg is under a force which causes a displacement in it, given by s =t2 / 3 (in m). Find the work done by the force in 2 second
detailed solution
Correct option is D
W=∫02 F⋅ds=∫02 mads=∫02 m⋅d2sdt2⋅dsdt⋅dt=∫02 32323tdt=43∫02 tdt=43t2202=43×42=83=2⋅6JTalk to our academic expert!
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A force F = 20 + 10y acts on a particle in y direction where F is in newton and y in meter. Work done by this force to move the particle from y = 0 to y =1 m is
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