Can these please be solved on paper with a step by step explanation please Answers: 4) 4.1 m/s5)18.1 rad/s6) a. 0.452 rad/s b. 1.41 rad/d7) 17.1 rad/s

4) A spherical Yo-Yo is released from rest 1.2 m above the ground. The Yo-Yo unwinds as it falls. What is the Yo-Yo's linear velocity right before it hits the ground? Use energy methods. 5) A mass of 8 kg is resting on a horizontal table with a coefficient of kinetic friction of 0.35. The mass is connected to a cable that passes over a pulley of mass 3.5 kg and radius 21 cm. The other end of the cable is attached to a second hanging mass of 15 kg. The system is released from rest. Calculate the angular velocity of the pulley after the masses have moved 1.5 m. Use energy methods. 6) A 4.8 m diameter merry-go-round is rotating freely with an angular velocity of 0.8 rad/s. Its total moment of inertia is 1950 kg m?. Skid, Mitch, Larry, and Greezy all jump on the merry-go-round at the same time. They each have a mass of 65 kg. (a) What is the angular velocity of the merry-go-round now? (b) What if they were all on it originally and then jumped off? /7) Disc #1 of mass 5 kg and radius 2.6 m is attached to an axle that is rotating at 20 rad/s. Disc #2 of mass 2 kg and radius 1.7 m is dropped from rest. It slides down the axle and sticks to Disc #1. What is the angular velocity of the two discs? Disc #2 Disc #1 Before After