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Torque and Angular Momentum by Mind Map: Torque and Angular Momentum
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Torque and Angular Momentum

Torque

Angular force

Vector quality

Magnitude

Point of Application

Pushing perpendicularly gives a maximum torque

Pushing radially inward with same magnitude gives zero torque

Proportional to the perpendicular component will give it a lesser torque

not seperate from force

measured by how effective a given force is at twisting or turning something

Direction

Concepts are the same as linear Kinematics

PR. Solv. rotational Inertia

If the object consists of a small number of particles calculate the sum

For simple geometric shapes advance math be used, for simplier use table 8.1

decompose object into several parts, find the sum of each, and then add them

move mass parellel to the rotation axis without changing I

Rotational Inertia

depends on the location of the rotational axis

Newton's Second Law for Rotations

Spinning of torque

Counterclockwise

Positive

Clockwise

negative

Problem solving for Lever arms

Draw a line parallel to the force through the force's point of application

Draw a line from the rotation axis to the line of action

the magnitude of the torque is the magnitude of the force times the lever arm

Determine the algebraic sign of the torque as before