Question

A car of mass $1000kg$ moves on a circular path constant speed of $16m/s$. It is turned by $90$ after travelling $628m$ on the road. The centripetal force acting on the car is

• A. $160N$
• B. $320N$
• C. $1280N$
• D. $640N$

Answer 1

The correct option is B $320N$

The motion of the car is:

$m=1000kg,v=16m/s,\frac{\pi r}{4}$=628 m$

$r=\frac{4\times 628}{\pi }$

Centripetal force =$\frac{m{v}^2}{r}$

$=\frac{1000\times 16\times 16\times \pi }{4\times 628}=320N$