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A particle of mass m is released in vert...

A particle of mass `m` is released in vertical plane from a point `P` at `x=x_(0)` on the `x`-axis. It falls vertically parallel to the `y`-axis. Find the torque `tau` acting on the particle at a time about origin.

Text Solution

Verified by Experts

Torque is produced by the force of gravity.
`vectau=rFsintheta` or `tau=r mg (x_(0)//r)=mgx_(0)hatk`
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