Available Answers

1. 1.

   Name the simple machines used in daily life for the following:

   1. Cutting fruits and vegetables
   2. To cut cloth
   3. To open thee cap of a cold drink bottle
   4. To tightten screws
2. 2.

   Match the following

   Column I	Column II
   1. First class lever	(a) Wheelbarrow
   2. Second class lever	(b) Stapler
   3. Third class lever	(c) See-saw

    

3. 3.

   Fill in the blanks.

   1. A _______________ is a grooved wheel.
   2. A fixed pulley changes the direction of _______________ .
   3. Pulleys are of _______________ types.
   4. In _______________, the wheel moves with the load.
4. 4.

   Name the following types of machines:

   1. Giant wheel
   2. Ramp in hospital
   3. Used for cutting and splitting objects
   4. Revolving chair
5. 5.

   Multiple choice questions.

   1. A wheel with a rod attached to it is known as a 
      1. inclined plane
      2. wheel and axle arrangement
      3. lever
      4. screw
   2. Fixed pulley is used for
      1. lifting loads
      2. holding things tightly
      3. drawing water
      4. lifting a rock
   3. A screw jack used to lift cars is an example of
      1. pulley
      2. wheel and axle arrangement
      3. lever arrangement
      4. screw arrangement
   4. A crowbar is a 
      1. first class lever
      2. wheel and axle arrangement
      3. pulley arrangement
      4. lever arrangement
   5. A crowbar is a 
      1. first class lever
      2. wheel and axle arrangement
      3. pulley arrangement
      4. lever arrangement
6. 6.

   Fill in the blanks.

   1. A nutcracker is an example of a _______________.
   2. A _______________ is an inclined plane wrapped around a cylinder in the form of a spiral.
   3. _______________ is the fixed point on which the rod moves.
   4. A lever consists of fulcrum, load and _______________.
   5. If a wheel is mounted on a rod, then the rod is called an _______________.