Questions
A force given by the relation F = 8t, acts on a body of mass 2 kg, initially at rest. Find the work done by this force on the body during first 2 seconds of its motion.
detailed solution
Correct option is A
F = ma = 8ta = 8tdvdt=8tdv=8tdt∫0v dv=∫8tdt8t22=4t202V=16ms−1w=ΔK=12×(2)162−0 = 64 JTalk to our academic expert!
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