Question

A 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.
HELP ME OUT GUYS

Answer 1

let the true weight be W.
Then 240-W=2m,where m is the mass of the body.
240=m(12)=>m=20kg.