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# Mechanics question watch

1. Got part i okay but stuck on how to do second part? Thanks

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2. (Original post by GM16)
Got part i okay but stuck on how to do second part? Thanks

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...
3. (Original post by GM16)
Got part i okay but stuck on how to do second part? Thanks

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diagram
resolve forces vertically and horizontaly
box is in equilibrium
2 equations
you find a and P
4. Resolve horizontally and vertically
5. (Original post by TeeEm)
diagram
resolve forces vertically and horizontaly
box is in equilibrium
2 equations
you find a and P
What two equations should I have? I've got one for horizontal but am confused as to how to make the second one

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6. (Original post by GM16)
What two equations should I have? I've got one for horizontal but am confused as to how to make the second one

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vertically:

Psina + weight = Normal reaction
7. (Original post by TeeEm)
vertically:

Psina + weight = Normal reaction
I had that but was unsure if it was correct. What do I do from here? I had this question in a mock and got to here and wasn't sure what to do after

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8. (Original post by GM16)
I had that but was unsure if it was correct. What do I do from here? I had this question in a mock and got to here and wasn't sure what to do after

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you solve the equations simultaneously (horizontal and vertical) by substitution
9. (Original post by TeeEm)
you solve the equations simultaneously (horizontal and vertical) by substitution
Ahh okay, thanks a lot

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10. (Original post by GM16)
Ahh okay, thanks a lot

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hope it works

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