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Introductory Physics Homework Help
Why Must P Be Perpendicular to R for Minimum Force on an Inclined Plane?
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[QUOTE="masterflex, post: 1310095, member: 72291"] [h2]Homework Statement [/h2] This is a conceptual/logic question I have. I don't understand why for minimum P: [B]P[/B] must be perpendicular to [B]R[/B]; angle beta = psi_s. (please see attached picture). Once I can get my arms around that statement, I can solve the problem. Thanks for any logic help. Or if there's another way to approach this, that's cool too.[h2]Homework Equations[/h2] [h2]The Attempt at a Solution[/h2] Why is the angle Beta not = 0? That is the most puzzling thing conceptually. It would seem that if angle Beta=0, you would get the most mechanical efficiency because the direction of force P would then be perpendicular to the normal N. [/QUOTE]
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Introductory Physics Homework Help
Why Must P Be Perpendicular to R for Minimum Force on an Inclined Plane?
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