Question

a) At the bottom is a 3 step pulley; consisting ofthree wheelsof different diameters.b) The rotating arm has two massesattached,and is screwed into the 3 step pulley. Whenthe pulleyrotates, so does the rod.c) The string is wrapped around one ofthewheels in the 3 step pulley and passes overthe smart pulley. Themass hanger ishooked into the loop at the end of the string.d) Whenthe system is released, the mass hanger falls, turning the smartpulley, and the 3 step pulley withthe rod attached.e) Assume: thatthe smart pulley is very light, so its moment of inertia isnegligible as compared to themoment of inertia of the 3 step pulleyand rod.

if you increase m, the mass on the mass holder,what happens to the following quantities:
- α, the angular accelertion ofthe pulley.
- I, the angular momentum of the pulleys-plus-rodsystem.

α decreases, I decreases- α decreases, I remainsthe same - α increases, I increases- α increases, I remainsthe same - α remains thesame, I increases - α remains thesame, I remains the same- α remains thesame, I decreases - α increases, I decreases- α decreases, I increases

if you move the two masses attached to the rotating rodaway from the center of mass of the rod, what happens to thefollowing quantities:
- α, the angular accelertion ofthe pulley.
- I, the angular momentum of the pulleys-plus-rodsystem.

α decreases, I decreases - α decreases, I increases - α decreases, I remainsthe same - α remains thesame, I increases - α increases, I remainsthe same - α increases, I decreases- α increases, I increases- α remains thesame, I remains the same- α remains thesame, I decreases