Question

A body of mass 5kg is to be given an acceleration of 20m/s2.calculate the force required when acceleration is vertically upwards (g=10m/s2)

Answer 1

the desired acceleration is twice the gravitational acceleration, in an upward direction

so the required force is 3 g's

f = m a = 5 * 30 = 150 N

Answer 2

Full answer