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A cuboid of height 10 cm, width 5 cm and...

A cuboid of height 10 cm, width 5 cm and 8 kg is kept on a rough horizontal ground as shown . The ground is so rough that we can assume that the questions indicated below. A boy applies a horizontal force F at the top edge of the cuboid.

What is the minimum value of F so taht the block begins to topple ?

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The correct Answer is:
B


`Fxx10 cm - mg xx5/2 =0`
`F=(mg)/4 =20 N`
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