Question

A locomotive of mass M starts moving so that its velocity varies according to the law
$v = \alpha \sqrt{s}$
Where Alpha is a constant and s is the distance covered find the total work done by all the forces acting on the locomotive during the first t seconds after the beginning of motion.

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Answer 1

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Answer 2

Since, it is given , dS/dt =a(s)^1/2, calculate the va;lue of ‘s’ from this relation by integrating with in the limit.
After calciulating ‘s’, put this value in the the given relation to find ‘v’.
similarly, calculate acceleration by differentiating ‘v’.
Put the value in the , W = F . S = m a .s
Put the value and get the answer..........mat4/8....