Question

An object of mass 4kg moves in a circle at radius 8cm at uniform speed of 32m/s calculate (A)The angular velocity (B) The centripetal force

Answer 1

Find force is F=mv^2/r, so F=4*32^2/8 = 512N.

Answer 2

Step-by-step explanation:

Given:

m = 4 kg

R = 8 cm = 0.08 m

V = 32 m/s

_______________

ω - ?

F - ?

(A)The angular velocity:

ω = V / R = 32 / 0.08 = 400 rad/c

(B) The centripetal force:

F = m·V² / R = 4·32² / 0.08 = 51 200 J