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Anonymous
Troubleshoot my shitty physics pls 2016-01-26 23:26:08 Post No. 7812973
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Troubleshoot my shitty physics pls 2016-01-26 23:26:08 Post No. 7812973
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If torque is the cross product of R and F, doesnt that imply that a perpendicular force on, say, a door, should produce no force?
magnitude of cross product = |r| x |F| x cos(θ)
Where r is the vector from the hinge to the application of force.
Isnt θ here pi, making cos(θ) = 0 and thus making the magnitude zero?
What part of this have I misunderstood?
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>>7812973
Whoops, I meant
>isnt θ here pi/2
of course
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>>7812973
>cos(θ)
>>
>mixing cross product with multiplication
>cos(θ)
u wut m8
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>>7812973
>magnitude of cross product = |r| x |F| x cos(θ)
no it's not you mongrel
>>
Are you saying you're trying to open a door by pulling on the top of it?
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