Physics Practice Problems Equilibrium with Multiple Supports Practice Problems Solution: A mechanical lift is used to raise a heavy load. T...

Solution: A mechanical lift is used to raise a heavy load. The lift consists of a horizontal platform of length L drawn by vertical cables on either end of the platform. The platform has a mass m. The load has mass 4m and is placed a distance L/4 from the right end of the lift. The acceleration due to gravity is g. What is the tension in the right vertical cable? 1. (2/3) mg 2. (2/7) mg 3. (7/2) mg 4. (3/2) mg 5. (7/4) mg 6. (4/5) mg 7. mg 8. (1/3) mg 9. (5/4) mg 10. 3mg

Problem

A mechanical lift is used to raise a heavy load. The lift consists of a horizontal platform of length L drawn by vertical cables on either end of the platform. The platform has a mass m. The load has mass 4m and is placed a distance L/4 from the right end of the lift. The acceleration due to gravity is g. What is the tension in the right vertical cable?

1. (2/3) mg

2. (2/7) mg

3. (7/2) mg

4. (3/2) mg

5. (7/4) mg

6. (4/5) mg

7. mg

8. (1/3) mg

9. (5/4) mg

10. 3mg