A body weighing 100N moves with a speed of 5ms-1 in a horizontal circular path of radius 5m. Calculate the . magnitude of the centripetal force acting on the body. (g = 10ms-2)
- 10N
-
50N
- 75N
- 100N
The correct answer is: B
Explanation
W = 100N, r = 5m, v = 5m/s and g = 10m/s2
BUT \(F_c\) = \(\frac{M \times V^2}{r}\)
W = mg = m = 100/10 = 10kg
\(F_c\) = \(\frac{10\times 5^2}{5}\) = 50N