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A body of mass ‘m’ moving in a circular path of radius ‘r’ with velocity ‘v’ has centripetal force of

F = mv

the string is 300 N, what is the velocity with which the ball is rotating?

keep the ball rotating around the circular path. Placing the values of mass (0.1 kg), radius (0.3 m) and force

(300 N) in the expression of centripetal force we get

300 = (0.1 x v

90 = 0.1 x v

v

v

v = sqrt (900)

v = 30 m/s

moving with velocity of 15 m/s, what is the mass of the car?

radius (4 m) and velocity (15 m/s) in the expression of centripetal force we get

30000 = (m x 15

120000 = 225m

m = 120000/225

m = 533.33 kg

the centripetal acceleration?

F = mv

Centripetal acceleration has the expression of

a

Therefore, we can write

F = m x a

F = 1000000 N and m = 25000 kg therefore,

1000000 = 25000 x a

a

a