CBSE Class 11-science Answered
Problem
Asked by Tahira | 31 Oct, 2009, 06:03: PM
Expert Answer
work done = force x displacement
= ( mass x acceleration ) x displacement.
Here veloicty = a (x) -1/2 , displacement = ( b - 0 ) = b
so, acceleration = dv / dt = - a x -2
Hence, work done = m ( - a x -2 ) b
= - m a b x -2
Answered by | 01 Nov, 2009, 02:11: PM
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