Simple Machines

What are different types of pulleys? Explain any two with figures also.

What is a pulley? Explain single fixed pulley, block and tackle pulley and single movable pulley with the help of diagrams.

Explain the simple machines such as lever, wedge, wheel and pulley.

A see-saw is an example of a

Name the type of simple machine in which a fishing rod belongs.

Choose from the following: (first lass lever/ second class lever/ third class lever)

A wheelbarrow is an example of a/an _____.

Simple machines make work convenient by changing the _____ of force.

Find out the levers you use at home and tabulate them as shown below.

Don't you see the use of a crowbar to reduce workload in the two situations in the pictures? Do you notice any change in the position of effort, fulcrum and resistance in the two situations?

Observe the pictures. Which method of drawing water is easier? Why?

Observe the pictures. Where on the spoon should you hold in order to open the lid of a tin easily?

Why, do you think, is it difficult to pierce a blunt nail into a wall? Discuss. 

Didn't you notice the picture? Which simple machine's principle is made use of in the ramp? 

Mark the fulcrum, resistance and effort in the figure of lever given below.

Mark the fulcrum, resistance and effort in the figure of lever given below.

Mark the fulcrum, resistance and effort in the figure of lever given below.

Mark the fulcrum, resistance and effort in the figure of lever given below.

Mark the fulcrum, resistance and effort in the figure of lever given below.

Mark the fulcrum, resistance and effort in the figure of lever given below.

Look at the pictures of some simple machines.

Tabulate the tasks made easier by these devices.