Centre of Mass and Gravity Concepts

Centre of Mass and Gravity Concepts

Assessment

Interactive Video

Physics

9th - 10th Grade

Hard

Created by

Thomas White

FREE Resource

The video explores the concepts of centre of mass and centre of gravity, starting with historical insights from Galileo and Archimedes. It explains how the centre of mass is the point where a system's mass is concentrated, while the centre of gravity is where the weight acts towards Earth's centre. The video clarifies that in a uniform gravitational field, these points coincide, but differ in non-uniform fields. Practical applications, such as the Leaning Tower of Pisa, illustrate the importance of understanding these concepts in construction and equilibrium.

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20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Who was inspired by Archimedes to explore the concept of gravity?

Albert Einstein

Isaac Newton

Niels Bohr

Galileo Galilei

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What was Galileo's contribution to the study of gravity?

He discovered the law of universal gravitation

He wrote a treatise on the centre of gravity

He invented the telescope

He formulated the theory of relativity

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the centre of mass?

The point where an object is heaviest

The point where an object is lightest

The point where the gravitational force is strongest

The point where all the mass of a system is concentrated

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How can the centre of mass be found in a symmetrical object?

At the heaviest end

At the lightest end

At the point of symmetry

At the base of the object

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens when force is applied at the centre of mass?

The object moves upward

The object remains balanced

The object spins

The object tilts

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the centre of gravity emphasize?

The mass of the system

The weight of the system

The volume of the system

The density of the system

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Where is the centre of gravity located in a uniform rod?

At the top

At the base

At the midpoint

At one end

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