homework help: i need help with some maths homework :( - Help.com

anonymous5678
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An Unknown Location

i need help with some maths homework :(

Here’s the question:
Two forces, P and Q, act on a particle at the origin O. Force P acts along Ox, force Q makes an angle k with Oy.
Calculate the magnitude of the resultant force and the angle it makes with O when P=4N, Q=3N and k=60 degrees

HELP!!

This open post was written 1 year, 1 month ago | V/U/S: 190, 4, 4 | Edit Post | Leave a reply | Report Post


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Since writing this post anonymous5678 may have helped people, but has not within the last 4 days. anonymous5678 is a verified member, has been around for 1 year, 9 months and has 23 posts and 157 replies to their name.

Post Tags (10)

mathematics, Angle, Force, homework, question, Origin, degree, Magnitude, particle, Calculation (How Tags Affect Reciprocity)

Replies (4)

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rxchatter offline Verified User (1 year, 1 month) Long Term User Shouts: 40 #
An Unknown Location | 1 year, 1 month ago (5 minutes after post)

I wish I can… I forgot my Math now…

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burgerkrieg offline Verified User (1 year, 1 month) Long Term User Shouts: 2 #
An Unknown Location | 1 year, 1 month ago (22 minutes after post)

I’m not sure what equation(s) you would use, but I would start by drawing out a diagram. Do you have any equations you’ve been working with?

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anonymous5678 offline Verified User (1 year, 9 months) Long Term User Shouts: 3 #
An Unknown Location | 1 year, 1 month ago (27 minutes after post)

oh i have finally got it :)

i was using the cosine rule wrong

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Spike Spiegel offline Verified User (1 year, 2 months) Long Term User Shouts: 7 #
An Undisclosed Location | 1 year, 1 month ago (27 minutes after post)

you project the Q on

ox it will be like this Qx=Qcos(90-k)
oy Qy= Qsink

then you add the Qx to p [ now you have the force on x]
qy is the onle force on y

and start from here

i dont shour that this is the soulution but try it (i dont have the time to do it for you!!!)

hagop bulbulian
physicist

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