Question

I am confused when they say the "the force down the plane has the sine component and the normal force and force into the plane have the cosine component." Also aren't I only suppose to look at a certain component of the weight force? If you could please label all the forces, their direction, and whether they would be sine or cosine that would be greatly appreciated, thank you!

Question 4 Consider the pulley system below. Find the acceleration of mass m2 up the hill mi Screen Shot 2019-01-20 at 9.02.56 AM | 숲 Q Search O A. aineg Correct Answer Question Explanation A. Since the question states that m2 will accelerate up the hill, the direction of rotation of the pulley will be counterclockwise, meaning that down will be positive for m1 and up the inclined plane will be positive for m2. Here then are the two tension equations: m,g T ma, T - m2g sine -m2a. Note that the force down the plane has the sine component (the force into the plane and normal force have the cosine component). Adding the two equations yields m1g m2g sine m2a + m1a, or (m1- m2 sine)g-(m1 + m2)a. Solving for acceleration yields: a= m+m2 g Your Answer m2-mi m-m2 sing

Answer 1