The centripetal force depends on the mass of body, angular velocity and radius of circular path. find the expression for the centripetal force.

F = m ω² r

Explanation:

Centripetal force is mass times centripetal acceleration:

F = ma

F = m v² / r

In terms of angular velocity:

F = m (ωr)² / r

F = m ω² r

3. dark matter

empty space could also be a simple vacuum

electrical potential energy =0.072 j

explanation:

electrical potential energy is given by

u= q δv

q= charge=6 c

δv= potential difference and is given by

δv= e d

e= electric field

d= distance=5 mm=0.005 m

δv=2.4 (0.005)=0.012 v

now electric potential energy= u= q δv

u=6 (0.012)

u=0.072 j