Recent content by Return

phew, ok thanks for the help, i got the generic solution earlier today!

ok so i end up getting V^2/2 = gh so I need to express h in terms of theta right? Lsin(theta)?

what factors do I include in the equation of theta? can I use kinematics equations?

1. Ok at the collision, momentum is conserved p(i) = p(f) mv(i)(bullet) = [m(bullet) + m(bob)]v(f) 2. As the pendulum is rising, energy is conserved? E(i) = E(f) so...PE(i) + KE(i) = PE(f) + KE(f) --> ok here's where I am a little confused, the initial conditions for PE and KE, they are for...

But isn't energy not conserved because the collision is inelastic?

[SOLVED] Pendulum: Generic Solution for Angle Hey guys, I'm a little lost on this one, not sure where to start. I'm doing a lab involving a pendulum bob being hit by a ball and them sticking together (inelastic collision). Almost like a ballistic pendulum right? Anyway, I need to find the...

So if I want to use the velocities, I use the law of cosines right?

[SOLVED] Deflection Angle Hey guys, back again lol, got a really quick question: In order to convert a tough split in bowling it is necessary to strike the pin a glancing blow as shown. Assume that the bowling ball, initially traveling at 12.0 [m/s], has five times the mass of the pin and...

lol oh yea, that's a slap in the head ty for the reminder I got this one over lunch, so looks like I'm good, used a combination of conservation of momentum and conservation of energy.

[SOLVED] Conservation of momentum + elastic collision Hey guys, I couldn't even start this one, tried to think about it, but I'm hitting a blank A block of mass m = 2.20 [kg] slides down a 30 degrees incline which is 3.60 [m] high. At the bottom, it strikes a block of mass M = 7.00 [kg]...

oh ok, i think what I'm getting confused about is this: the sled goes up the ramp and then it comes down, can you assume the initial veloctiy coming down is 2.4 [m/s]? that was it's initial velocity when it was going up.Also can you also really disregard P.E.? because it goes up the ramp, stops...

ok, sounds good, but how do I know the initial velocity to plug into my KE(i) equation?

[SOLVED] Non conservative forces: work + coefficient of static friction hey guys, I've been having a little trouble with some parts of this problem, hope someone can point me in the right direction A 20[kg] sled starts up a 30 degrees incline with a speed of 2.4[m/s] the coefficient of...