Question

A 900 kg car moving at 10 ms^-1 takes a turn around a circle with a radius of 25 m. Determine the acceleration and the net force acting upon the car.

Answer 1

When the car turns around circle, it experiences centripetal acceleration 

a = \(\frac{v^2}{r}\)

a = \(\frac{(10)^2}{25}\) = \(\frac{100}{25}\) 

∴ a = 4ms^-2 

Net force acting upon the car, 

F = ma = 900 × 4 = 3600N