Question

a body exerts a force of 800 n on the floor of the lift which moves upwards with a retardation of 2 m/s2. what is mass of the body carried in the lift?

Answer 1

F=MA,

GIVEN,  F =800N

            a = -2m/s

using formula,

            800=m x -2

             m = 800/2

              m = 400 kg

Answer 2

• F = ma

F = 800 N

a = -2 m/s²

Mas$ = 800/2 = 400 kg

★ Thus, mass of object is 400 kg.