A diving board 3.00 m long is supported at a point 1.00 m from the end, and a diver weighing 500 N stands at the free end. The diving board is of uniform cross section and weighs 280 N. Find: a. the force at the support point
b. the force at the left-hand end.

Explanation:

From the question we are told that:

Length

Support distance

Weight of diver

Weight of board

Generally the equation for Total Torque is mathematically given by

Since we consider the horizontal axis

Therefore  the force at the support point  1.00m from the force at the left-hand

it may be wrong but i think its a

a.) travels faster in solids because the particles are closer together.

air is a gas water is a liquid