Physics
Grade-10
Easy
Question
What is the centrifugal force acting when a ball is swirling around a point as it is tied to a rope. The radius of the circle formed is 20 cm. The mass of the ball is 300 gm. The speed of the rotation is 5 m/s.
- 37 N
- 37.5 N
- 38 N
- 38.5 N
Hint:
The correct answer is: 37.5 N
mass, m = 300gm = 0.3kg
velocity, v = 5 m/s
radius, r = 20cm = 0.20m
centrifugal force, 
Using the given formula,
we will find the missing value,
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