Recent content by hydroxide0

I think by "non-gravitational and non-electromagnetic forces" it means "non-uniformly-acting forces". OK, I'll stick with that definition. Incidentally, isn't this the same as the Wikipedia definition of g-force above if we replace "non-gravitational and non-electromagnetic forces" by...

Note: Just to clarify, I am using the terms "zero g-force" and "weightless" interchangeably. I'm not sure what you mean. I'm simply looking for a definition of g-force. I know that, but I'm looking for an exact definition without any "usually"s. That definition doesn't even count an object...

I am having considerable difficulty in finding a precise definition of g-force. My understanding is that it is the acceleration an object would undergo due to just the non-gravitational and non-electromagnetic forces acting on the object. A corollary of this is that an object experiences zero...

Correct me if I'm wrong about this, but since a force acting over zero time causes zero impulse, the horizontal force of the pivot causes zero impulse during the instantaneous collision. Therefore the momentum just before and just after the collision are equal.

Homework Statement The problem is Problem 2 on page 3 here: http://ocw.mit.edu/courses/physics/8-01sc-physics-i-classical-mechanics-fall-2010/angular-momentum-1/conservation-of-angular-momentum/MIT8_01SC_problems25_soln.pdf Homework Equations 3. The Attempt at a Solution [/B] My question...

But if we assume the collision is instantaneous (as they did in their solution), then there can't be any net impulse on the system, right?

Homework Statement The problem is Example 25.3.1 (a) on page 11 here: http://ocw.mit.edu/courses/physics/8-01sc-physics-i-classical-mechanics-fall-2010/angular-momentum-1/conservation-of-angular-momentum/MIT8_01SC_coursenotes25.pdf. Homework Equations 3. The Attempt at a Solution [/B] Here is...