Question

On a rare snowy day in the Peach State, you and your friends decide to create a sledding run on a local hill near your home. You use an old plastic disk someone found in their garage as the sled and then use the winch motor on the front of someone's truck to pull people back up the hill. Answer the following questions using the following information: the hill makes an angle of 15 with the horizontal, the hill is 30 m long, and there is no friction between the plastic disk and the snow. You may also ignore air resistance. 1. a. If a sledder starts at rest at the top of the hill, how fast are they moving at the bottom? b. If the rope from the winch is parallel to the ground on the hill, how much force must the motor of the winch exert to pull someone whose mass is 90 ka hack un the bill at constant velocity?

Answer 1

30 TRi hi 2- m/s. 12-34