Question

Body hangs from a spring balance supported from the roof of an elevator. (a) if the elevator has an upward acceleration of 2 m/s and balance reads 240 n, what is the true weight of the body.

Answer 1

Hope you get the answer

Answer 2

Given are the data a body hangs from spring balance reads 240 N which is in motion of an acceleration of $2\frac { m }{ s^{ 2 } }$ downwards, therefore for the true weight of the weight known as the mass of the body, spring balance reads as Normal reaction  = mass of body $\times$ downward acceleration, therefore, putting the values we get – Force experienced downwards equals the Normal reaction therefore, $240 = mass\quad of\quad body\times 2$

$\Rightarrow$ mass of body = 120 kg.