Feeling like I'm being really dumb about this question but if anyone could help to point me in the right direction I'd really appreciate it
Need to work out the forces of P and Q. Thank you in advance
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- Thread Starter
- 22-09-2016 12:31
- 22-09-2016 12:42
Resolve the P and Q forces vertically and horizontally (parallel and perpendicular to the 9N)
Form and solve simultaneous equations for the forces that are in equilibrium
Posted from TSR MobileLast edited by gdunne42; 22-09-2016 at 14:20.
- 22-09-2016 12:43
Don't feel dumb, I'm not sure how to do it either. I haven't actually stared M1 yet but I have done AS Physics. I think P and Q should just share the 9N proportional (or maybe inversely proportional) to their angles so I'd just do 9*(25/60) for P and 9*(35/60) for Q. Hope that helped a little
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- 22-09-2016 12:51
Two unknowns, two equations. Simultaneous equations to solve.
Here is a diagram to make it clear where it came from, if you know your trigonometry, you can use angles of 25 and 35 directly but from the diagram it is easier to see how vertical and horizontal forces balance so I'm using those. Still gets the right answer so don't worry.
Last edited by RDKGames; 22-09-2016 at 12:53.