Px155 Revision Flashcards
1
Q
Formula for rotational kinetic energy?
A
Ke = 1/2mr²w²
2
Q
Formula for velocity in terms of angular velocity?
A
v = wr
3
Q
Formula for acceleration in terms of velocity and also angular velocity?
A
a = v²/r = w²r
4
Q
Angular momentum formulae?
A
L = mvr = Iw = r x p
5
Q
What is the formula for length contraction in SR?
A
L = L0/gamma
6
Q
What is the formula for momentum in SR?
A
Gamma x m0 x v
7
Q
What is the formula for kinetic energy in SR?
A
(Gamma - 1) x m0 x c²
8
Q
Total energy formula in SR?
A
Gamma x m0 x c^2
9
Q
What is the formula for parallel axis theorem?
A
I(p) = I(cm) + Md²
(The moment of inertia through any axis point parallel to that at the centre of mass can be worked out this way)
