A diving board 3.00 m long is secured at the ladder end, supported at a point 1.00 m from the ladder end, and a 500 N diver stands at the far end. The diving board itself has a uniform composition and weighs 280 N. Find the force on the diving board at the support poi nt and the force at the ladder end.

On a mild saturday morning while people are working inside, the furnace keeps the temperature inside the building at 23degreesc. at noon the furnace is turned off, and the people go home. the temperature outside is a constant 16degreesc for the rest of the afternoon. if the time constant for the building is 3 hr, when will the temperature inside the building reach 18degreesc? if some windows are left open and the time constant drops to 2 hr, when will the temperature inside reach 18degreesc?