Question

A toy car of mass 5 kg starts from rest and moves up a ramp under the influence of force F (F is applied in the direction of velocity) plotted against displacement x. The maximum height attained is given by $(g=10m/s^2)$

• A. $y_{max}=20m$
• B. $y_{max}=15m$
• C. $y_{max}=11m$
• D. $y_{max}=5m$

Answer 1

The correct option is C $y_{max}=11m$

work done by F is equal to the

work done by gravity

$\frac{1}{2}\times 100\times 11=5\times 10\times h$

$h=11m$

Correct option is (C).