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Question 1 of 10

1. Select all the variables of the problem that are known.

Question 1 of 10

Question 2 of 10

2. In this problem, how many bodies need to be studied?

Question 2 of 10

Question 3 of 10

3. Which newton laws can be seen in this problem?

Question 3 of 10

Question 4 of 10

4. What is the function of the pulley?

Question 4 of 10

Question 5 of 10

5. Select the diagram with the correct forces in each body.

Question 5 of 10

Question 6 of 10

6. Take the correct coordinate system and forces of the last question. Which forces magnitudes are the same?

Question 6 of 10

Question 7 of 10

7. Let \(m_B, W_B\) and \(N_B\) be the mass, the weight and the normal forces of the box, \(m_M\) the mass of the man, and \(F\) be the force exerted by the man. Which of the following equations best describe the forces in the force diagram?

Question 7 of 10

Question 8 of 10

8. Taking the equations in the last problem that are correct. Which of the following statements are true?

Question 8 of 10

Question 9 of 10

9. We can use the same general equation for the three cases.

Question 9 of 10

Question 10 of 10

10. Take the forces equation we found and replace the numerical values for each. Then, the force that the floor exerts on the box if the man pulls with (a) 100 N force is N, with (b) 300 N force is N and (c) if he hangs on the rope is N.

Question 10 of 10