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thatguy14

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**1.A rigid structure consisting of a circular hoop (on the right) of Radius R and mass m, and a square (on the left) made of four thin bars, each of length R and mass m. The rigid structure rotates at a constant speed about a verticle axis, with a period of rotation of 2.5 s. Assuming R = 0.50m and m = 2.0 kg, calculate (a) the structures rotational inertia about the axis of rotation and (b) its angular momentum about that axis**

There is a picture associated with the question but i can't upload it. Basically on the left is a square then right to the right of tht is a circle and inbetween the 2 there is a line drawn shoing the axis of rotation, the square is touching the circle.

There is a picture associated with the question but i can't upload it. Basically on the left is a square then right to the right of tht is a circle and inbetween the 2 there is a line drawn shoing the axis of rotation, the square is touching the circle.

**2. Rotational inertia for the hoop = 1/2 MR^2**

Parallel axis theorm = Icom + MH^2

I don't know how to find the rotational inertia of the square that is composed of 4 thin bars each of length R. The rotational inertia equation for the hoop was already given to us in a previous table in the book, but nothing for a thin rod rotating about its axis type of thing.

L = Iw w=(omega)

Parallel axis theorm = Icom + MH^2

I don't know how to find the rotational inertia of the square that is composed of 4 thin bars each of length R. The rotational inertia equation for the hoop was already given to us in a previous table in the book, but nothing for a thin rod rotating about its axis type of thing.

L = Iw w=(omega)

**3. i couldn't do anything for this question as i couldn't find the rotational inertia of the square, I don't know how to.**