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October 21, 2025, 08:15:01 pm
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Author Topic: Confusion between vectors and forces  (Read 587 times)  Share 

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98.40_for_sure

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Confusion between vectors and forces
« on: October 22, 2010, 07:25:43 pm »
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I've attached the question to the post.

I got answer E by resolving vertical forces and getting 0.5P + 0.5T = -W => P + T =-2W

But the answer is D, claiming that T + P + W = 0 as it is in equilibrium.

Can someone clarify what i did wrong pls

ty
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SixWinged

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Re: Confusion between vectors and forces
« Reply #1 on: October 22, 2010, 11:15:41 pm »
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0.5P + 0.5T is assuming that P = |P~| and T = |T~| (No idea how to ~ under vectors.)

The solutions are all in terms of vectors, hence resolving vertical forces is not the correct way to go about it.
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chansthename

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Re: Confusion between vectors and forces
« Reply #2 on: October 23, 2010, 11:56:38 am »
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with this one, I would personally draw up a triangle of forces and then you can use basic trig for the solution
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