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Question

A box of dimensions l and b is kept on a truck, moving with an acceleration a. If the box does not slide, maximum acceleration for it to remain in equilibrium (w.r.t truck) is,


A
g lb
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B
g bl
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C
g
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D
None of these
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Solution

The correct option is B g bl

If the box does not slide, it can topple about O

In the above F.B.D (with respect to truck)

τo=0
mal2=mgb2

a=gbl

Hence, (B) is the correct answer.

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