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A plank with a body of mass m placed on ...

A plank with a body of mass m placed on it starts moving straight up according to the law `y=a(1-cosomegat),` where y is the displacement from the initial position, `omega=11s^(-1)`. Find:
The time dependence of the force that the body exerts on the plank if a=4.0cm.

Text Solution

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`F=mg(1+(aomega^2)/gcosomegat)`
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