Equations (s2) Flashcards
(10 cards)
1
Q
Linear Kinetic Energy
A
1/2 * mass * velocity^2
2
Q
Moment of inertia (for a solid sphere)
A
5/2 * m * r^2
3
Q
Rotational Kinetic energy
A
1/2 * moment of interia * angular velocity^2
4
Q
Gravitational potential energy
A
mass * gravity * height
5
Q
Elastic potential energy
A
1/2 * k (spring constant) * spring extension (m)
6
Q
Law of conservation of energy
A
Initial kinetic energy + initial potential energy = final kinetic energy + final potential energy
7
Q
Work
A
Force * distance
8
Q
Work-Energy Theorum
A
Delta in kinetic energy = the product of half the object’s mass and its final velocity squared minus the product of half the object’s mass and its initial velocity squared.
9
Q
IMA
A
- Resistance force / effort force
- Length of effort arm / length of resistance arm
- Distance of effort / distance of resistance
- Radius of wheel / radius of axle
- Length of ramp hyp / height of ramp
- 2pi * pitch / length between threads
10
Q
Efficiency
A
- Work out / work in * 100
- MA / IMA * 100
