Available Answers

1. 1.

   Complete the concept map.

   

2. 2.

   Name the following:

   1. A long bar that rests on a fixed point that lifts or moves load.
   2. Force that a user applies on the lever.
   3. A simple machine with a wheel and an axle or a rod that allows the wheel to be turned.
   4. It has a rope or chain that can move things up and down or back and forth.
   5. A pulley that remains fixed to a position.
3. 3.

   Fill in the blanks.

   1. _____________ (Machines/Force) are devices that make work easier.
   2. _______________ (Pulley /Lever) is a long bar that rests on a fixed point that lifts or moves loads.
   3. ____________ (Load/Fulcrum) is the weight of the body on which the work is to be done.
   4. Flagpost is an example of a _____________ (fixed/movable) pulley.
   5. In class- ___________ (one/two) levers, the fulcrum is in between the load and effort.
   6. Forceps is an example of a class- ____________ (two/three) lever.
4. 4.

   Define class-one levers.
5. 5.

   Give two examples of class-two levers.
6. 6.

   What is wheel and axle?