Match the columns. A B Frictional force Reduces friction First class lever Lifts heavy things Gravitational potential energy Roads in mountains Wheel and axle Helps us to walk Inclined plane Depends on height and weight

The frictional force is the essential force which helps us to walk on ground. As it works against the motion, it helps us balance. The first-class lever helps for lifting very heavy objects. Fulcrum is in the middle in this kind of lever. Gravitational potential energy is directly related to both height and weight (mass) of the object. Heavier objects face a larger gravitational pull. Wheel and axle reduce friction when an object is moving over a surface. As with little force, we can move the wheel and the heavy load on the axle. An example of the inclined plane is the mountain roads that wind back and forth. We need more force if the angle of the slope is more. Frictional force Helps us to walk First class lever Lifts heavy things Gravitational potential energy Depends on height and weight Wheel and axle Reduces friction Inclined plane Roads in mountains

E M B I B E

LEARNING SCIENCE FOR SMARTER LIFE>Chapter 9 - Simple Machines>Exercise 2

HARD

5th CBSE

IMPORTANT

Earn 100

Work is said to be done when we use force to move an object from its position. Put a tick below the pictures that show work done.

Important Questions on Simple Machines

MEDIUM

5th CBSE

IMPORTANT

LEARNING SCIENCE FOR SMARTER LIFE>Chapter 9 - Simple Machines>Curious Curie

Why screw is mostly used to join two things together?

HARD

5th CBSE

IMPORTANT

LEARNING SCIENCE FOR SMARTER LIFE>Chapter 9 - Simple Machines>Exercise 2

Work is said to be done when we use force to move an object from its position. Put a tick below the pictures that show work done.

HARD

5th CBSE

IMPORTANT

LEARNING SCIENCE FOR SMARTER LIFE>Chapter 9 - Simple Machines>Quick Check

Match the columns.

A	B
Frictional force	Reduces friction
First class lever	Lifts heavy things
Gravitational potential energy	Roads in mountains
Wheel and axle	Helps us to walk
Inclined plane	Depends on height and weight