Pulley

Which of these jobs would become easier if you had a pulley?

What is the main advantage of a pulley?

Why pulleys are called simple machines? 
 

Explain pulley and its types with well-labelled diagrams. 

Find out the simple machine used in the tight shoe laces.

Give one example of Pulley.

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

Name the following:

A simple machine that reverses the action of force.

Identify the simple machine shown in the below picture: _____(Lever/ Pulley/ Inclined plane)

Identify the simple machine shown in the below picture: _____(Lever/ Screw/ Pulley)

Can you guess which simple machine is shown in the figure?

Unscramble the following word to make meaningful word:
YLUEPL  

(Hint: Changes direction of applied force)

_____reduces the amount of force necessary to lift the heavy objects.

_____is used to carry heavy loads.

Pulley is a_____ which reduces effort.

Pulley makes the work easier by changing the force of direction.

Here is a picture of a simple machine we use in day-to-day life. Write the correct name of a simple machine to say what kind of machine is. 

Here is a picture of a simple machine we use in day-to-day life. Write the correct name of a simple machine to say what kind of machine is. 

a. lever 

b. wheel and axle

c. inclined plane

d. pulley

e. screw    

f. wedge

_____ are used in cranes to lift heavy loads.

In _____ pulley, the effort applied acts against the force of gravity.