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i have two questions that i need help understanding

A majorette takes tow batons and fastens them together in the middle at right angles to make an "x" shape. Each baton was 0.6m long and each ball on the end is 0.50kg. (Ignore the mass of the rods.) What is the moment of inertia if the arrangement is spun around an axis formed by one of the batons?

I=(1/12)ML^2

Not sure how to apply the equation to the problem. And what does it mean when n the arrangement is spun around an axis?

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A tether ball is attached to a pole with 4.0m rope. It is circling at 0.20 rev per second. As the rope wraps around the pole it shortens. How long is the rope when the ball is moving at 6m/s

not sure

but .20 rev/sec = 1.26 rads/sec

not sure what to do.. what equations should i be focusing on?

**1a. Homework Statement**A majorette takes tow batons and fastens them together in the middle at right angles to make an "x" shape. Each baton was 0.6m long and each ball on the end is 0.50kg. (Ignore the mass of the rods.) What is the moment of inertia if the arrangement is spun around an axis formed by one of the batons?

**2a. Relevant equations**I=(1/12)ML^2

**3a. The attempt at a solution**Not sure how to apply the equation to the problem. And what does it mean when n the arrangement is spun around an axis?

_______________________________________________

**1b. Homework Statement**A tether ball is attached to a pole with 4.0m rope. It is circling at 0.20 rev per second. As the rope wraps around the pole it shortens. How long is the rope when the ball is moving at 6m/s

**2b. Relevant equations**not sure

but .20 rev/sec = 1.26 rads/sec

**3b. The attempt at a solution**not sure what to do.. what equations should i be focusing on?

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