Recent content by tdub96

Using 10m/s/s comes out to be 18.97, which is closer, but I am still not confident in that. I'm going to keep trying some stuff, if anyone has anything to contribute please do so!

Homework Statement a 1.5 kg pendulum bob swings in a vertical circle at the end of a 2m long string with negligible weight. If the bob is dropped from a height in which the string is horizontal and taut, what is the angular momentum at the bob's lowest point (in kgm/s^2)? a 40 b 10 c 30...

I'm not quite sure I know what you mean by reference frame... Mass 1 is moving because of the friction between it and m2, which is above it. The force of 100N is only applied to m2.

So I was given a challenge problem in physics class that reads... Mass m1=40kg, is sitting on a frictionless floor while m2=10kg sits on top of it. Between each mass, the coefficient of static friction is .6, and the kinetic coefficient is .4. M2 is pulled by a force of 100N to the left. What...

Anyone?

I should be adding one to the T of the second graph as it is launched a second later, correct? Then, I would graph each equation and the intersection of the two parabolas is the time when the two objects pass mid-flight?

X=1/2aΔt2+Vot+xo, yes I was missing a T. Would it be logical to set two of these equations equal to each other like this... 1/2aΔt2+Vot+xo=1/2a(Δt+1)2+Vo(Δt+1)+xo Or am i better off using your equation? I've never seen the one you posted before...

Correct, so I'd set 100=6t2+4t3. By simplifying, I'd get t3+2/3t2-25=0. How would I factor that to solve for t? As for kinematics, there are a couple velocity and position related functions. X=1/2aΔt2+Vo+xo and v=√(vo2+2aΔx). I am assuming to use the first one?

What kind of kinematics equations for #1? And yes, for #2 the initial time =0. So then the initial acceleration would be 12ft/s^2. By using derivatives, the equation for velocity would be 12t-12t^2, and acceleration would be 12+24t. I just don't know where to go from there.

Hey guys, I am new to the forums. I am currently taking AP Physics in my senior year of high school, and I am having some difficulty solving the following two problems: 1. A ball is shot upward with a velocity of 30ft/s. Another is shot upward a second later at 100ft/s. Where and when do they...