1) A thin hoop of radius r = 0.13 m and mass M = 8.1 kg rolls without slipping across a horizontal floor with a velocity v = 4.0 m/s. It then rolls up an incline with an angle of inclination theta = 33o. What is the maximum height h reached by the hoop before rolling back down the incline? 2) A uniform horizontal bar of length L = 5 m and weight 233 N is pinned to a vertical wall and supported by a thin wire that makes an angle of theta = 43o with the horizontal. A mass M, with a weight of 384 N, can be moved anywhere along the bar. The wire can withstand a maximum tension of 547 N. What is the maximum possible distance from the wall at which mass M can be placed before the wire breaks? *I'm sorry I am asking all these questions, i just really don't even know where to begin and I've never had this much trouble with homework before. Please help me!