Thread: Physics Help!

I need help with the current problem

Because the block is not moving, the sum of the y components of the forces acting on the block must be zero. Find an expression for the sum of the y components of the forces acting on the block, using coordinate system b.


Express your answer in terms of some or all of the variables , , , and .




Thanks!

Because the sum of the forces on the block is zero, you must have .

Thus, .

Now, using coordinate system b, , where m is the mass of the block and g is the acceleration due to gravity. Also, you know that , , and . Can you figure out how to solve for and ?