A car of mass 1500 kg goes round a circular curve of radius 50m at a speed of 40 ms-1. The magnitude of the centripetal force on the car is ?
A
4.8 x 104 N
B
4.8 x 103 N
C
1.2 x 103 N
D
1.2 x 102 N
Verified Correct Answer: A.
Physical Principles & Numerical Solution
Centipetal force of the car = ma = \(\frac{(MV^2)}{\text{r}}\)
= \(\frac{(1500 \times 40 \times 40}{50}\)
= 48000 = 4.8 x 10\(^4\) N
Source: Myschool Past Questions Archive (Record #13904)