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**1. Homework Statement**

I am having trouble with two problems.

1. An onion grown in 1994 had a record breaking mass of 5.55 kg. Assume that this onion can approximated by a uniform, solid sphere. Suppose the onion rolled down the inclined ramp that had a height of 1.40 m. What was the onion's rotational kinetic energy? Assume that there was no slippage between the ramp and the onion's surface.

2. The longest spacewalk by a team of astronauts lasted more than 8 h. It was performed in 1992 by 3 crew members from the space shutttle Endeavour. Suppose that during the walk 2 astronauts with equal masses held the opposite ends of a rope that was 10 m long. From the point of view of the 3rd astronaut, te other 2 astronauts rotated about the midpoint of the rope with an angular speed of 1.26 rad/s^2. If the astronauts shortened the rope equally from both ends, what was their angular speed when the rope was 4 m long?

**2. Homework Equations**

1. I know that the formula to use is 1/2(I)(final angular velocity)^2

2. I have no idea what to do here

**3. The Attempt at a Solution**

1. I'm having problems finding the final angular velocity because I don't have a time.

2. Once again, no idea what to do.