Solved Questions on Simple Machines
1. What is an example of an inclined plane in everyday life?
a) A bicycle
b) A hammer
c) Stairs
d) A pair of scissors
Answer: c) Stairs are an example of an inclined plane in everyday life. They consist of a flat surface set at an angle, allowing people to easily move between different levels of a building.
2. Choose the correct option that represents the type of simple machine used in the picture.
a) Lever
b) Inclined plane
c) Wheel and axle
d) Pulley
Answer: d) The pulley is used in the well to raise or lower the bucket, making it easier to draw water from the well.
3. Which of the following is a third-class lever?
a) 
b) 
c) 
d) 
Answer: b) Fishing rod is an example of a third-class lever where the effort is between the load and the fulcrum.
4. Match the following.
| Column I |
Column II |
| 1. Wheel and axle |
A) Flat surface that is higher on one end. |
| 2. Inclined plane |
B) A bar that helps us move heavy objects more easily. |
| 3. Lever |
C) Two cylinders that revolve around a common point. |
a) 1:C, 2:A, 3:B
b) 1:C, 2:B, 3:A
c) 1:B, 2:A, 3:C
d) 1:A, 2:C, 3:B
Answer: a) Wheel and Axle: Two cylinders that revolve around a common point.
Inclined Plane: Flat surface that is higher on one end
Lever: A bar that helps us move heavy objects more easily.
5. Which simple machine is used by carpenters to split blocks of wood?
a) Screw
b) Lever
c) Wedge
d) Pulley
Answer: c) A wedge is a triangular-shaped tool with a sharp edge that is u0sed to separate or split objects.
FAQs on Simple Machines
1. What is a Simple Machine?
A simple machine is a basic tool that makes work easier. It helps us do things like lift, move, and cut objects with less effort.
2. How many types of simple machines are there?
There are six main types of simple machines:
- Lever
- Pulley
- Wheel and Axle
- Inclined Plane
- Wedge
- Screw
3. What's the purpose of a pulley?
Using a rope or chain, a pulley helps the lifting of large objects. It makes moving objects easier by changing the direction of the force.
4. How does a screw help in simple machines?
An inclined plane around a pole is similar to a screw. The screw helps hold things together by turning it in or out.
5. What are some real life examples of simple machine?
Simple machines are everywhere! From using scissors (a type of lever) to opening a door (lever or wheel and axle), they make our daily tasks easier.
