Question

89.Calculate the net force acting on a car while it is moving from B to C

Answer 1

89.

In order to calculate the net force acting from B to C, we need to consider the centripetal force, since the car is in a circular movement.

The centripetal force is given by:

$\begin{gathered} F_c=m\cdot a_c_{} \\ a_c=\frac{v^2}{r} \end{gathered}$

Where ac is the centripetal acceleration, v is the linear speed and r is the radius of the curve.

So, for m = 1000, v = 20 and r = 100, we have:

$\begin{gathered} a_c=\frac{20^2}{100}=\frac{400}{100}=4 \\ F_c=1000\cdot4=4000\text{ N} \end{gathered}$

Therefore the net force acting is 4000 N.