Available Answers

1. 1.

   Multiple choice questions:

   1. Hammer, Scissors, pliers are:
      1. first class lever
      2. pulley
      3. second class lever
      4. screw
   2. An inclined plane wound around a rod is called:
      1. pulley
      2. screw
      3. wedge
      4. lever
   3. What is the position of the load in a second class lever:
      1. on the same side of the fulcrum
      2. before the effort
      3. between the fulcrum and the effort
      4. none of these
   4. An example of a third class lever is a :
      1. see-saw
      2. broom
      3. ice tongs
      4. nut cracker
   5. Which of the following is used in sewing machines, bicycles?
      1. screw
      2. wheel and axle
      3. pulley
      4. levers
2. 2.

   How are simple machines useful?
3. 3.

   How many types of simple machines are there?
4. 4.

   What is a lever? On what basis are levers classified?
5. 5.

   What is an inclined plane? How is it useful to us?
6. 6.

   How is a pulley useful?