Question

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

• A. y_max = 20 m
• B. y_max = 15 m
• C. y_max = 10 m
• D. y_max = 5 m

Answer 1

Answer: (C)

y_max = 10 m

Answer 2

Work done = mgh

1/2 × base × height =mgh

(area under the curve is work done)

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

or h = 10 m