A pendulum bob of mass 50g is suspended from the ceiling of an elevator. The tension in the string if the elevator goes up with uniform velocity is approximately

Question

A pendulum bob of mass 50g is suspended from the ceiling of an elevator. The tension in the string if the elevator goes up with uniform velocity is approximately (A) 0.30N (B) 0.40 N (C) 0.42 N (D) 0.50 N

Tardigrade Admin · Accepted Answer

As elevator goes up with uniform velocity then acceleration a = 0 T = m (g + a) T=mg=(50 × (10)- 3)× 10 =0.5 N

Q. A pendulum bob of mass $50 g$ is suspended from the ceiling of an elevator. The tension in the string if the elevator goes up with uniform velocity is approximately

$0.30 N$

$0.40 N$

$0.42 N$

$0.50 N$

As elevator goes up with uniform velocity then acceleration a = 0
$T = m (g + a)$
$T = m g = (50 \times (10)^{- 3}) \times 10$
$= 0.5$ N

Q. A pendulum bob of mass 50g is suspended from the ceiling of an elevator. The tension in the string if the elevator goes up with uniform velocity is approximately

0.30N

0.40N

0.42N

0.50N