Question

An object of mass 4kg moves round a circle of radius 6m with constant speed 12ms calculate,the angular velocity and the force toward the center

Answer 1

m=1000kgv=16m/s⟹628=r(2π)⟹r=400

∴Centripetal force=rmv2=400(1000)(16)(16)=640N

Answer 2

Answer: w=2rad/s

F=96N

Explanation:

Let w be angular velocity

V be velocity

r be radius

W= v/r

W=12/6. =2rad/s

Let F be force

m be mass

w be angular velocity

r be radius

F= mw^2r

F= 4×2^2×6

F=96N