Question

If lift is going up with acceleration, the apparent weight of a body is
A) may be more or less than true weight B) more than the true weight C) less than the true weight D) equal to the true weight

Answer 1

Answer:

A) may be more or less than true weight

B) more than the true weight ☑️☑️

C) less than the true weight

D) equal to the true weight

Answer 2

Answer: B) more than the true weight

 

Explanation:

• When a lift moves upwards with acceleration a the weight of the person inside it increases.
• Let that the mass of man is m kg.
• The reaction force  is denoted by R.
• So, R-mg=ma

           ⇒R=mg+ma

           ∴ R= m(g+a)

• Hence, the resultant weight increases when the lift moves upwards.

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