Answer to Question #172512 in Mechanics | Relativity for neha

Question

A woman of mass m = 60 kg descends in an elevator in that briefly accelerates downward at a = 0.20g. If she stands on a scale, what is the reading on the scale that is apparent/effective weight w?

Answer 1

Solution:

When the elevator is not moving, the scale reads 60*9.8 = 588N

If the elevator is falling acceleration 9.8, the scale reads zero

W = m*(g+a) = 60(9.8 - 0.2*9.8) = 470N