What is the unit to measure force?

In the sport of parasailing, a person is attached to a rope being pulled by a boat while hanging from a parachute-like sail. a rider is towed at a constant speed by a rope that is at an angle of 15 ∘ from horizontal. the tension in the rope is 1900 n. the force of the sail on the rider is 30∘ from horizontal. what is the weight of the rider? express your answer with the appropriate units.

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects

What is the moment of inertia i of this assembly about the axis through which it is pivoted? express the moment of inertia in terms of mr