THP
Why it's easier to push the door from the furthest distance From the pivot point?
The discussion centers on the mechanics of pushing a door from various distances relative to its pivot point. It establishes that the torque (τ) required to open or close the door remains constant, but the force (F) applied and the distance (r) from the pivot point are inversely related. Pushing the door from a greater distance increases the torque, making it easier to operate. The analogy of a lever and mechanical advantage is emphasized, illustrating that greater distance spreads the effort over a larger area, akin to using a gentle ramp instead of stairs.
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Is this a homework question?THP said:Why it's easier to push the door from the furthest distance From the pivot point?
haruspex said:Is this a homework question?
"It is like walking up the long but gentle ramp instead of climbing the short flight of stairs."haruspex said:I suspect that an argument based on torque does not provide the intuitive explanation that is sought.
Perhaps a more natural way is to think in terms of mechanical advantage. It is effectively a lever. When you push at a point far from the pivot you have to push further to get the door to close to the same extent. This spreads the effort over a greater distance. It is like walking up the long but gentle ramp instead of climbing the short flight of stairs.