1. Figure 1 is an example of: a) Inclined Plane b) Pulley c) Screw d) Lever
2. Which of the following statement is true for Figure 1. a) b is the fulcrum, c is the resistance, a is the effort b) b is the resistance, c is the fulcrum, a is the effort c)b is the fulcrum, a is the effort, c is the resistance. d) b is the resistance, a is the fulcrum, c is the effort
3. In figure 1, if the distance from a to b is 20cm, and the distance from a to c is 80 cm, then the mechanical advantage of the system is. a)20 b) 80 c)4 d) 1/4
4. Given that the mass at (b) is 1 kilogram. What mass would the block at (c) have to be to lift block (b)? Note: Use the distance values given in question 3. a) 1000 grams b) 250 grams c) 80 grams d) 400 grams
5. If the mechanical advantage of a simple machine is 4, then the a) output force is 4 times the effort b) effort is 4 times the output force c) efficiency is 4% d) the work output is 4 times the input
6. A simple machine that is actually a kind on inclined plane is a a) pulley b) wedge c) gear d) balance
7. A pulley system has 3 sections of ropes that lift the load. The mechanical advantage of the system is a) 0 b) 1 c) 2 d)3.
8. The efficiency of a simple machine a) is always less than 100% b) is equal to 100% c) is always 50% d) is always more than 100%
9. A knife is an example of a (an)
a) Inclined Plane b) Wedge c) ramp d)pulley
10. Decreasing the slant of an inclined plane increases its. a) effort force b) Mechanical Advantage b) Power d) Work output
