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A block of weight W is placed on a wedge...

A block of weight W is placed on a wedge and arranged as shown in fig. find the force F needed to hold the cart equilibrium if there is no friction.

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`N=W cos theta and N sin theta =F`
`implies W cos theta sin theta =F`
or `F=W (sqrt(3))/(2) * 1/2 implies F=(sqrt(3)W)/(4)`.
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CENGAGE PHYSICS ENGLISH-NEWTON'S LAWS OF MOTION 1-Exercise 6.2
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