Question

When a lift is accelerating downward that a=g then the net force acting on the object is: (a)F=0N (b)F=mg (c)F=w-mg (d) F=w_ma

Answer 1

the answers the correct one is A

F = 0

Step-by-step explanation:

To find the net force we must apply Newton's second law

F -W = ma

where the upward direction is positive, they indicate that the acceleration is equal to = - g

F = W - m g

the weight of a body of W = mg

we substitute

F = mg - mg

F = 0

The check the answers the correct one is A