Homework Statement
Realize I'm asking a lot of question today, but I'm working on a huge physics project and I'm not asking for answers, just some guidance where I'm stuck
A certain yo-yo can be modeled as a uniform cylindrical disk with mass M and radius R and a lightweight hub of radius...
Homework Statement
One likely theory for the origin of the Moon is that it was formed by the impact of a Mars-sized object on the young Earth. How fast would the object have to be going when it hit the Earth to vaporize enough rock to make the Moon?
Homework Equations
The Attempt...
Homework Statement
Consider a simple model of a dam. A reservoir of water behind the dam is filled to a height h. Assume that the width of the dam is L. As the reservoir behind a dam is filled with water, the pressure that the water exerts on the dam increases. Eventually, the force on the...
Homework Statement
Show that the angular momentum in circular orbit around a mass
M can be written as functions of just the masses, the
orbit radius, and G.
Homework Equations
L = r x p = r x mv
L = Iw
The Attempt at a Solution
I had no trouble showing that the total...
Homework Statement
A certain yo-yo can be modeled as a uniform cylindrical
disk with mass M and radius R and a lightweight hub of
radius ½R. A light string is wrapped around the hub.
(a) First, the yo-yo is allowed to fall. Find the angular
velocity of the yo-yo when the string has...