PMT

$13$

$($d$)$ A solid cylinder is held stationary by a wire so that the base of the cylinder is level with the surface of the liquid, as shown in Fig. $4\mathrm{.}3.$

The cylinder has length $4\mathrm{.}0{10}^{-2}m$ and eross$-$sectional area $3\mathrm{.}7{10}^{-4}{m}^2.$ The tension in the wire is $0\mathrm{.}53N.$

The cylinder is now lowered and then held stationary by the wire so that the top of the cylinder is level with the surface of the liquid.

Calculate the new tension in the wire.