A pendulum bob of mass $50 \,gm$ is suspended from the ceiling of an elevator. The tension in the string if the elevator goes up with uniform velocity is approximately .......... $N$
$0.30$
$0.40$
$0.42$
$0.50$
A pendulum bob of mass $50 \,gm$ is suspended from the ceiling of an elevator. The tension in the string if the elevator goes up with uniform velocity is approximately .......... $N$
$T = mg = 50 \times {10^{ - 3}} \times 10 = 0.5\,N$