An object of mass 10 kg is hanging on a spring scale which is attached to the roof of a lift. If the lift is in free fall, the reading in the spring scale is
A. 98 N
B. zero
C. 49 N
D. 9.8 N
Answer:B
An object of mass 10 kg is hanging on a spring scale which is attached to the roof of a lift. If the lift is in free fall, the reading in the spring scale is
A. 98 N B. zero C. 49 N D. 9.8 N