Simple machine class 5

The figure given shows pliers.

Which of the following represents X, Y and Z?

• A) X- Load, Y- Effort, Z-Fulcrum    

• B)  X- Load, Y- Fulcrum, Z- Effort

• C) X- Effort, Y- Load, Z –Fulcrum   

• D) X- Fulcrum, Y- Effort, Z- Load

2) The figure given below shows

•        a) A lever                                           

                                  

•   b) An inclined plane

•   c) A wheel and axle 

• d) A pulley             

Ramps, a wedge, and a screw are all examples of

• A)  Levers             

      

• B)  Pulleys

• C)  Wheels and axles      

• D)  Inclined plane

Which simple machine is an inclined plane wrapped around a cylinder?

• A)  Wedge             

   

• B)  Screw

• C)  Wheel and axle

• D)  Lever

Levers are divided into _______ classes based on the location of the fulcrum and of the input and output forces.

• A)  Four                            

                  

• B)  three

• C)  five             

• D)  two

If the fulcrum is closer to the effort, it will take

• A)  More force to lift the load

• B)  Less force to lift the load

• C)  Equal force to the lift the load

• D)  No force to life the load

Effort is.....

• A)  An inclined plane wrapped around a rod

• B)  A unit used for measuring force

• C)  How far an object moves in a certain amount of time

• D)  The force applied to a simple machine.

Which is a characteristic of simple machines?

• A) They run on electricity.

• B) They take a long time to make.

• C) They have few or no moving parts.

• D) They are not very large

When a rope or cable is wrapped over a grooved wheel it is called a:

           

• A)  Lever   

• B)  Wheel and Axle

• C)  Pulley  

• D)  Machine

An axe and a chisel are examples of what type of simple machine?

• A)  Lever and Inclined plane

• B)  Wheel and Axle

• C)   Wedge

• D)  Screw