A body of mass 3 kg is under a constant force which causes a displacement s in metres in it,given by the relation s=12t2 , where t is in seconds. Work done by the force in 2 seconds is:-
519 J
38 J
83 J
195 J
A
38 J
B
519 J
C
83 J
D
195 J
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Solution
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By using work energy theorem
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