- #1

urbano

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## Homework Statement

In order to link these into a logical sequence, how do they fit together

## Homework Equations

I = rotational inertia a = angular acceleration (I know a different symbol is usually used)

τ= force x moment arm distance

## The Attempt at a Solution

so....to get my head around how these interact

Torque is the amount of rotational force applied to a body.

rotational inertia is how much the body will resist this force

angular acceleration is how dpenedne ton these two.

**Situation one.**

If I applied 5Nm of torque to a body that had a rotational inertia greater than this then the body wouldn't move and its angular acceleration would be 0

**Situation two.**

If I applied 5Nm of torque to a body that had a rotational inertia less than this then the body would move BUTwhat if it moves at a constant velocity and doesn't accelerate ? It still has 0 acceleration but is moving ?

I unsure how torque can length of moment arm x force AND moment of inertia x angular acceleration

if there is is 0 angular acceleration then moment of inertia x 0 = 0 so ther eis 0 Torque

but if I'm applying 5Nm of toruqe how can there be 0 torque ?

I must have missed something fundamental somewhere