- Pulley System on the test
- Ideal mechanic advantage by using diagram of pulleys
- PE + KE = PE’ + KE’ for the FRQ of the test
- Where did the energy go?
- Sound, Heat, Friction, Deformation
- Work in
- Work out
- Potential Energy
- Kinetic Energy
- Which quantity is affected by friction: F
- We don’t use machine to do less work
- Couple of questions from Penguin, Monkeys, Etc lab
Page O’ Notes §
- If a rock is thrown then it has a kinetic energy at the top
- KE = m(v)
- PE = mgh
- PE k(x)
- k = spring constant
- x = how much the spring has moved
- mv + mv = mv’ + mv’
- Recall the bullet problem in the homework packet
- KE = KE - KE
- KE = (I)(W)
- W = F(d) (Joules)
- W = F(d)(cos)
- P = (watts)
- Conservation of energy equation:
- Momentum = mass x velocity
- AMA = MA =
- IMA = Fd = Fd -> = **
- efficiency = * 100%
- solid ball vs hollow ball
- solid gets down the hill first; smaller moment of inertia
- hollow = rotational
- solid = translational
