Physics Home Tutors in DHA Phase 5 Islamabad for O Level, A Level & FSc Students

Your true weight does not change in an elevator, but the scale reading can. When the lift accelerates upward, scale reading = m(g + a). You feel heavier. When it accelerates downward, reading = m(g − a). At constant speed, a = 0 and the scale reads ordinary weight.

Physics tutors in DHA Phase 5 Islamabad can practise this with a free-body diagram of the person on the scale.