1: A 10 kg box rests on a scale which is placed on the floor of an elevator. Find the apparent weight of the box if the elevator is (a) moving with constant velocity of 10 m/s (b) accelerating downward with 3 m/s? (c) accelerating upward with 5 m/s2. Ans: (a) 100 N (b) 70 N (c) 150 N.