(Solved): A 75-kg person stands on a tiny rotating platform with arms outstretched. Part A Estimate the mome ...

A 75-kg person stands on a tiny rotating platform with arms outstretched. Part A Estimate the moment of inertia of the person using the following approximations: the body (including head and legs) is a 60-kg cylinder, 16 cm in radius and 1.7 m high; and each arm is a 7.5-kg thin rod, 65 cm long, attached to the cylinder. Express your answer using two significant figures. [? ??? I = Submit Part B Previous Answers Request Answer X Incorrect; Try Again; One attempt remaining ? I = Using the same approximations, estimate the moment of inertia when the arms are at the person's sides. Express your answer using two significant figures. [? ??? kg. m² ? Constants Periodic Table kg-m² A 75-kg person stands on a tiny rotating platform with arms outstretched. Part C If one rotation takes 1.5 s when the person's arms are outstretched, what is the time for each rotation with arms at the sides? Ignore the moment of inertia of the lightweight platform. Express your answer using two significant figures. T= Submit Part D IVE ??? AK= Request Answer Determine the change in kinetic energy when the arms are lifted from the sides to the horizontal position. Express your answer using two significant figures. IVE ??? Submit ? Request Answer ? J Part E From your answer to part D, would you expect it to be harder or easier to lift your arms when rotating or when at rest? Express your answer using two significant figures. OIt is easier to lift the arms when rotating. OIt is easier to lift the arms when at rest. Submit Request Answer