7. The two blocks in the figure below are connected by a light rope. An upward force of 200 N is applied as shown. 200 N 6 Kg 5 Kg A) Draw free-body diagrams. B) What is the acceleration of the system? C) What is the tension in the rope. D) What is the tension at the midpoint of the rope?

The object in the diagram is acted upon by the two forces as shown below. 3N object What is the effect of these forces? 2N Select one: a. The object moves to the left with constant speed b. The object moves to the right with constant acceleration c. The object moves to the right with constant speed d. The object moves to the left with constant acceleration

b) A 4 kg block is pulled along a rough inclined plane by a force of 71 N as shown in Figure 2. Given the coefficient of friction between the block and inclined plane is 0.4. i. Draw a free body diagram. ii. Calculate the acceleration of the block. 37⁰ Figure 2

2. What horizontal force must be applied to a large block of mass M shown in figure below so that the blocks remain stationary relative to M? Assume all surfaces and the pulley are frictionless. Notice that the force exerted by the string accelerates m2. m2 m1 M

3. Can there be forces acting on an object at rest? Explain why or why not. Add Text Here! 4. What is the net force on an object that has balanced forces acting on it? Add Text Here! 5. Find the net force acting on the books below. Add Text Here! 6. Find the net force acting on the books below. Add Text Here! FOON 7. Two students push on a box in the same direction and a third student pushes in the opposite direction. What is the net force on the box if each push with a force of 50 N? Add Text Here! 8. Why is Newton's 1* Law also known as the Law of Inertia? Add Text Here! 9. The more Add Text! an object has, the more inertia it has. 10. Rank the following objects from least amount of inertia to most amount of inertia. ? Textbook ? Pencil ? Kindergartener ? Elephant OYI NotRockn Samce 2017 Motion and Force Unit 25

A worker pulls a crate of mass, m, via a uniform, massless cable that is attached to the crate at an angle, θ, above the horizontal. The resultant tension in the cable is T. What is the normal force acting on the crate? a. mg b. mg + Tsinθ c. mg - Tcosθ d. mg - Tsinθ e. Tsinθ

5. Let's revisit the practice problem. Two blocks are connected by a rope passing over a frictionless pulley as shown below. The mass of the rope is negligible. 30 kg 52 kg a) Using Newton's second law, calculate the acceleration of the 30-kg mass.