- #1
jwxie
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Homework Statement
A block of mass m=2.0kg is held in equilibrium on an incline of angle=60 degrees by the horizontal force F.
a)determine the value of F
b)determine the normal force exerted by the incline on the block (ignore friction).
Homework Equations
Fnet = ma
Fnetx = 0
Fnety = 0
The Attempt at a Solution
So, first I thought about it
If it is held in equilibrum, doesn't it means the object is at rest, at least, shouldn't Fnet = 0 since a = 0?
I investigated my Fnetx and Fnet y.
Fnetx = 0, then I have F - FgSin60 = 0
Fnety = 0, then I have Fg - Fgcos60 = 0
But it doesn't make sense because fg doesn't equal to Fgcos60
the answer for a) 34N and b) 39
please correct my approach, where have I gone wrong??