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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.


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  #21  
Old 11-02-2005, 12:45 AM
OG
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Default 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
think about it).

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


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  #22  
Old 11-02-2005, 12:49 AM
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Default 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.


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