Recent content by SoulInNeed

Are you saying it would just even out on both sides of the equation?

That's what I was thinking, but that equation applies to translational acceleration, and this equation deals with angular acceleration. For that, we use the equation torque=Inertia*angular acceleration, right? Wouldn't the loss of a mass (even if its force remains) simply reduce inertia, and...

1. There is a circular disk with a string wrapped around its center. We attached a mass to the string, and the force caused it to rotate. Now, the hypothetical question is "The hanging mass m is exerting a constant downward force of magnitude mg on our system. What would happen to the angular...

Please help with periodic motion problems! 1. What are the correct units for frequency? What are the correct units for angular frequency? 2. A grandfather clock keeps time by using a pendulum. If you want to design a pendulum to have a period of 1 s, estimate how long you should make the...

Thanks!

1.1. What are the SI units of angular velocity? Why? 2. Imagine a baton twirler is spinning a baton about its center. Which would increase its rotational kinetic energy more: doubling the angular velocity of the baton while keeping the mass and length the same, or doubling the length of the...

I'll ask the prof, and see what he says.

This is simply a statement of the conservation of momentum, right?

OK, let me start over, at the point of collision, don't the objects exert an equal but opposite in direction force on each other? And if force=rate of change in momentum, then what one object gains in momentum, the other will lose in momentum, but the rate of change is the same, right?

I was saying that J=F * time interval= change in momentum, and if force is constant, then it would depend on the time interval for any difference. It's a really bad way of saying it, I know, lol. And yeah, we've done work=force * displacement, although we didn't call it an integral.

OK, well, even if the force is inconsistent, J= p(f) - p(i) is true. The rate of change in momentum depends on the amount of force and the time interval. If I treat these two objects as a system, and the force is constant (even if it isn't, I just use the average force), then the rate of change...

OK, well I understand that the change in momentum determines impulse, and if we treat this two objects as a system, then the impulse must stay constant from the initial conditions to the final conditions, so that, even if the momentums change, the rate has to be the same so that the impulse...

Was I at least correct in stating that they experience the same change in magnitude (in terms of momentum)?

1.1. A 7 kg glider on an air track starts with an initial velocity of 32 m/s and then runs into a 2 kg glider which is initially at rest. During the collision, which glider has a larger magnitude change in momentum? Explain your answer. 2. We observe the center of mass of a system of objects...

Bump again.