Answer to Question #264968 in Mechanics | Relativity for Moonlight

Question

A boy stands still in a weighing Machine which then read 65kg,he jumps upwards at the instant just before he jumps the machine reads 85kg.what acceleration does he acquire?

Answer 1

$ma=N-mg$

where $N=85g$ N

$a=(N-mg)/m=(85-65)/65=0.31$ m/s²