If a 6kg ball is hanging by a rope from the ceiling at rest, what is the tension of the rope?

58.8 N

Explanation:

Since the ball is hanging at rest, the net force on the ball must be zero.

There are only two forces acting on the rope:

- Its weight, downward, given by W = mg, where m = 6 kg is the mass of the ball and g=9.8 m/s^2 is the acceleration due to gravity

- the tension in the rope, T, upward

Therefore, the equation for the forces is:

And solving for T, we find:

we need to know the time interval during which the force acts. impulse of force = momentum change