Question

A lift is moving up with an acceleration of $3.675m/se{c}^2$. The weight of a man:

• A. increases by $37.5\%$
• B. decreases by $37.5\%$
• C. increases by $137.5\%$
• D. remains the same

Answer 1

The correct option is A increases by $37.5\%$

Increase in weight $=ma$
% change in weight $=\frac{ma}{mg}\times 100=\frac{a}{g}\times 100$
$=\frac{3.675}{9.8}\times 100=37.5$%