Question

Calculate the centripetal force of a ball on a string in circular motion if the mass is 7 kg

traveling at 3 m/s and the radius of the string is 4 meters.
0 11 N
0 14 N
0 16 N
0 25 N

Answer 1

F = 16 N

Step-by-step explanation:

Given that,

Mass of the ball, m = 7 kg

Speed of the ball in circular motion, v = 3 m/s

The radius of the string, r = 4 m

We need to find the centripetal force of a ball on a string in circular motion. The formula for the centripetal force is given by :

`F=(mv^2)/(r)`

Putting all the values in the above formula

`F=(7* (3)^2)/(4)\\\\=15.75\ N`

or

F = 16 N

Hence, the correct option is (c).