Question

A block $A$, whose weight is $200N$, is pulled up a slope of length $5m$ by means of a constant force $F(=150N)$ as illuminated in figure. By how much has the potential energy of the block $A$ increased?

• A. $0J$
• B. $750J$
• C. $600J$
• D. $450J$

Answer 1

The correct option is C $600J$

$P.E=m\times g\times h$
$⟹m\times g=200N;h=3m$;
Because one of the perpendicular side has length of $3m$
$P.E=200\times 3=600J$
Hence potential energy obtained by the body is $600\text{Joule}$.