Problem 12.31 A merrygoround is a common piece of playground equipment. A v Part A 3.0mdiameter merrygoround, which can be modeled as adisk with a mass of220 kg , is spinning at 25 rpm. John runs tangent to the merrygoround at 6.0 nits, in the same direction that it is turning, and jumps onto the outer edge. John's mass i8 30 kg Express your answer in revolutions per minute. What is the merrygoround's angularvelocity, in rpm, aerJohn jumps on? .AdJ-f'O? Submit nest Answer \fA16 kg , ZUmdiameter turntable rotates at 90 rpm on frictionless ' Part A bearings. Two 550 3 blocks fall from above, hit the turntable simultaneously at opposite ends Of a diameter, and Slle' What is the turntable's angular velocity, in rpm, just aer this event? Express your answer in revolutions per minute. Ell o a; w= Fir/ere Units Muestinswer \fPart A You have two steel solid spheres. Sphere 2 has twice the radius of sphere 1. By what factor does the moment of inertia 2 of sphere 2 exceed the moment of inertia I, of sphere 1? IVO ? I2/1= Submit Request Answer\fThe 3.0mIong, 98 kg rigid beam in [gure 1} is supported at each ' Part A end. A 84- kg student stands 2.0 m from support '1. How much upward force does the support 1 exert on the beam? Express your answer with the appropriate units. } View Available Hintlsl- El o =3 F1 = | Value Units V Part B How much upward force does the support 2 exert on the beam? Express your answer with the appropriate units. Figure 1 0\" b View Available Hintisi A m o =3 F2 = | Value Units 31} m Support I Suppon 2