Question

A toy car of mass 5 kg moves up a ramp under the influence of force F plotted against displacement. The maximum height attained is given by

• 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 $=mgh$

$\frac{1}{2}\times base\times height=mgh$
(area under the curve is work done)

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

or $h=11m$