Question

A man of weight $W$ is standing on a lift which is moving upward with an acceleration $a$. The apparent weight of the man is

• A. $W(1+\frac{a}{g})$
• B. $W$
• C. $W(1-\frac{a}{g})$
• D. $W(1-\frac{a^2}{g^2})$

Answer 1

The correct option is A $W(1+\frac{a}{g})$

$R-mg=ma$

$R=mg+ma$

$W_{app}=m(g+a)=mg(1+\frac{a}{g})$

$W_{app}=W(1+\frac{a}{g})$