Question

A $60kg$ man stands on a spring scale in a lift. At some instant, he finds that scale reading has changed from $60kg$ to $50kg$ for a while and then comes back to original mark. What should be concluded?

• A. The lift was in constant motion upward.
• B. The lift was in constant motion downward.
• C. The lift while in motion downward suddenly stopped.
• D. The lift while in motion upward suddenly stopped.
• E. none of these

Answer 1

The correct option is E none of these

The elevator is moving vertically downwards with a uniform acceleration $a$ in this case since the weight if the man decreases from $60kg$ to $50kg$ , it can be concluded that the lift is moving vertically downwards.

Hence, all the option are different