In the figure -3.90 shown, the net work ...

In the figure -3.90 shown, the net work done by the tension when the bigger block of mass M touches the ground is :

`+Mgd`

`-(M+m)gd`

`-mgd`

zero

Text Solution

Verified by Experts

The correct Answer is:

(d) Work done by tension on M is negative (force and displacement are in opposite directions). But work done by tension on m is positive. Net work done will be zero.

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