Momentum (Linear and Angular)

Michael Bueno7256
Mind Map by Michael Bueno7256, updated more than 1 year ago
Michael Bueno7256
Created by Michael Bueno7256 over 5 years ago
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Mind Map on Momentum (Linear and Angular), created by Michael Bueno7256 on 11/20/2014.
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Momentum (Linear and Angular)
1 Conservation of momentum
1.1 Conservation of energy

Annotations:

  • Think of energy as a bank account. Energy can be withdrawn, at which point it changes form but it does NOT disapear 
1.2 Total momentum of an isolated system is conserved/constant which means that Pf=Pi and Δp = 0, in all directions/dimensions

Annotations:

  • (if the sum of external forces = 0 is negligible AND no mass enters or leaves)
1.2.1 If ΣWork > 0 then there is ΔP(>0)
1.2.2 2 Body Collisions (Linear Momentum)
1.2.2.1 Elastic
1.2.2.1.1 A perfectly elastic collision is defined as one in which there is no loss of kinetic energy in the collision
1.2.2.1.1.1 One Dimensional
1.2.2.1.1.2 Two Dimensional
1.2.2.1.1.2.1

Attachments:

1.2.2.1.1.2.1.1
1.2.2.1.1.2.1.2 To find theta between two elastic collisions, use
1.2.2.1.1.3 To find velocities, we use relative velocity trick, (v2 − v1)f = −(v2 − v1)i
1.2.2.2 Inelastic
1.2.2.2.1 An inelastic collision is one in which part of the kinetic energy is changed to some other form of energy in the collision.
1.2.2.2.1.1
2 Linear
2.1 Vector
2.1.1 M= Kg
2.1.2 V= M/s
2.1.3 Kgm/s
3 Angular Momentum= L
3.1 Vector quantity
3.1.1 Moment of Inertia - Kg x meters^2
3.1.1.1 The rotational analog to mass- it represents an objects rotational inertia. An object's rotational inertia is determined by the chosen axis of rotation and is additive.
3.1.1.1.1 Parallel axis theorem: The moment of inertia of a parallel axis is equal to the moment of inertia of an object's center of mass + the total mass x the distance between the center of mass and the parallel axis of rotation
3.1.1.1.1.1
3.1.2 Angular Velocity- ω
3.1.2.1 Rad/s -> = V/r
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