Dei_Multiple_Choice

Pulley Quiz
1. What is the purpose of a pulley? A. Plant Seeds B. Lift Objects C. Hold wood together

2. A pulley attached in position above a load to be lifted is called a _? A. Compound pulley B. Movable pulley C. Fixed pulley

3. What do we gain by using simple machines? A. Save energy B. Mechanical advantage C. Reduce friction

4. Which object is a pulley? A. Seesaw B. Fishing Pole C. Elevator

5. Force is ___?__ A. Anything that changes the speed, direction of motion of an object B. Something that is moved C. A loop that connects two fixed pulleys

6. A pulley in which the wheel is directly attached to the load is a ? A. Fixed Pulley B. Movable Pulley C. Double Pulley

7. Force acting on something over a distance to either lift it or overcome resistance is an example of __? A. Friction B. Force C. Work

8. Mechanical advantage is __? A. The advantage is a favorable ratio of input force to output force B. When the machine does the work for the user C. When the user exerts more effort than the machine

9. If a man was working on his house and wanted to get something heavy to the second floor using a pulley and he was alone, which pulley system would work best? A. Compound Pulley B. Movable Pulley C. Fixed Pulley

10. Which is not an example of a pulley? A. toilet flusher (handle) B. Crane C. Window Blinds