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boaty
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Homework Statement
A sphere of radius R and mass M sits on a horizontal tabletop. A horizontally directed impulse with magnitude J is delivered to a spot on the ball a vertical distance h above the tabletop.
Part 1:
Determine the angular and translational velocity of the sphere just after the impulse is delivered when...
h > R, v = ?, [tex]\omega[/tex] = ?
h < R, v = ?, [tex]\omega[/tex] = ?
h = R, v = ?, [tex]\omega[/tex] = ?
Homework Equations
Since we're dealing with momentum, p = mv for linear momentum and L = r x p (r 'cross' p) for angular. Also, since the rotation of the sphere takes place around its axis of symmetry, L = I[tex]\omega[/tex] can be used.
The Attempt at a Solution
I know when h = R, v = J/m and [tex]\omega[/tex] = 0. Other than that I have no idea where to start. The help which goes with the problem said J = JT + JR, where the former is translational impulse, the latter, angular, but using these equations I can't get any answers (I can't even get the obvious answer I stated above).
Thanks in advance.
Edit:
I just figured out how to hack the website to give me the answer, so I don't really need help anymore. Usually the questions on the site are way more difficult than the in-class/exam questions, but if anyone still wants to post a solution, feel free. At least the question will be archived with an answer then.
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