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# rotation. why easier when greater r?

## rotation. why easier when greater r? - Physics Forum

### rotation. why easier when greater r? - Physics Forum. Discuss and ask physics questions, kinematics and other physics problems.

#21
11-02-2005, 12:45 AM
 OG Guest Posts: n/a
rotation. why easier when greater r?

"mumi" <[Only registered users see links. ]> wrote in message
news:dk250q\$k69\$[Only registered users see links. ].tpi.pl...

In macro model terms think about it in energy terms
Work = force x distance

This gives a direct expression of the torque of a system (but you do have to

In terms of the micro model, think of it in terms of the energy loss across
each micro-component (hint, the energy loss is zero for a firm lever).

Now spend some time thinking about it

#22
11-02-2005, 12:49 AM
 OG Guest Posts: n/a
rotation. why easier when greater r?

"mumi" <[Only registered users see links. ]> wrote in message
news:dk2v1h\$bd8\$[Only registered users see links. ].tpi.pl...
Force times linear distance = energy

Torque is the rotational correlate of force x distance, which arises from
the need for energy to be conserved in lever/pivot machines.

 Tags easier , greater , rotation

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