ICS Part 1 Physics English Medium Chapter 5 Online Short Questions Test with Answers

Question # 1

Explain the difference between tangential velocity and angular velocity.

Ans 1: The linear velocity of a particle moving along a curve or circle is called tangential velocity. Its direction is always along the tangent to the circle.
The rate of change of angular displacement is called angular velocity.The direction of angular velocity is along the axis of rotation of the body by right hand rule. V= rw

Question # 2

What is meant by moment of inertia? Explain its significance.

Ans 1: The product of mass of the particle and square of its perpendicular distance from the axis of rotation is called the moment of inertia.

I =mr²
^{The moment of inertia plays the same role in angular motion as the mass in linear motion.}

Question # 3

An object orbiting around the earth in said to be a freely falling body. Why?

Ans 1: An object in orbits is said to be freely falling , because the trajectory of its fall has the same curvature as Earth's surface. In fact, the object is falling towards the center of earth but because of spherical shape of earth, it never reaches the surface of earth.

Question # 4

Define angular velocity, How its direction is determined?

Ans 1: The rate of change of angular displacement is called angular velocity. The direction of angular velocity is along the axis of rotation and can be determined by right hand rule:
"Grasp the axis of rotation in right hand with the figures curling in the direction of rotation then the erect thumb will give the direction of angular velocity."

Question # 5

What is meant by centripetal force? Write down its formula.

Ans 1:

Question # 6

Define Moment of Inertia.Write its formula.

Ans 1: The property of the body to resist any change in its state of rest or uniform angular velocity is called moment of inertia. For a point mass 'm'situated at a distance 'r' from the axis of rotation , the moment of inertia 'I' is given by ; I=mr²
Significance;
Moment of inertia plays the same role in angular motion as that of mass plays in linear motion. It is also called measure of rotational inertia in angular motion.Moment of inertia determines the angular acceleration while mass determines the linear acceleration.

Question # 7

What is mean by angular momentum?

Ans 1:

Question # 8

Define centripetal force; write its formula and unit.

Ans 1:

Question # 9

What are geostationary orbit and geostationary satellites?

Ans 1: Geostationary Orbit: An orbit in which the time period of satellite is equal to the time period of spin motion of the earth is called geostationary orbit.

Geostationary Satellites: A satellite whose orbital motion is stationary along the earth is called geostationary satellite.

Question # 10

How is artificial gravity created?

Ans 1: Artificial gravity is the gravity like effect produced in an orbiting spaceship to overcome weightlessness.To create artificial gravity the spaceship is set into rotation around its own axis. The astronaut then is presses towards the outer rim and exerts a force on the floor of the spaceship in much the same way as on the earth.

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ICS Part 1 Physics English Medium Chapter 5 Online Short Questions Test with Answers

Online Short Questions For Chapter 5 "ICS Part 1 Physics Chapter 5 Short Questions Test "

Physics - ICS Part 1 Physics Chapter 5 Short Questions Test

Explain the difference between tangential velocity and angular velocity.

What is meant by moment of inertia? Explain its significance.

An object orbiting around the earth in said to be a freely falling body. Why?

Define angular velocity, How its direction is determined?

What is meant by centripetal force? Write down its formula.

Define Moment of Inertia.Write its formula.

What is mean by angular momentum?

Define centripetal force; write its formula and unit.

What are geostationary orbit and geostationary satellites?

How is artificial gravity created?

Prepare Complete Set Wise Questions For Chapter 5 "ICS Part 1 Physics Chapter 5 Short Questions Test "

Set 1

Set 2

Set 3

ICS Part 1 Physics Chapter 5 Short Questions Test - Set 1

Explain the difference between tangential velocity and angular velocity.

What is meant by moment of inertia? Explain its significance.

An object orbiting around the earth in said to be a freely falling body. Why?

Define angular velocity, How its direction is determined?

What is meant by centripetal force? Write down its formula.

Define Moment of Inertia.Write its formula.

What is mean by angular momentum?

Define centripetal force; write its formula and unit.

What are geostationary orbit and geostationary satellites?

How is artificial gravity created?

ICS Part 1 Physics Chapter 5 Short Questions Test - Set 2

What are Artificial Satellites?

When mud files off the tyre of a moving bicycle, I what direction does it fly?

Why is the axis of rotation of Earth remains fixed in one direction with respect to the universe around it?

Define angular displacement.

Explain why earth's satellite despite of being freely falling object does not reach the earth.

What is meant by INTEL SAT? At what frequencies the INELSAT-VI operates ?

Explain the difference between tangential velocity and angular velocity.

What is Geo-stationay satellite? How many minimum number of geo-stationary satellites are required fro global coverage coverage of T.V transmission ?

An object orbiting around the earth in said to be a freely falling body. Why?

What is mean by angular momentum?

ICS Part 1 Physics Chapter 5 Short Questions Test - Set 3

What is Geo-stationay satellite? How many minimum number of geo-stationary satellites are required fro global coverage coverage of T.V transmission ?

What are geostationary orbit and geostationary satellites?

Define angular displacement and write its S.I unit.

When mud files off the tyre of a moving bicycle, I what direction does it fly?

How would you determine the direction of angular momentum?

Explain how many minimum number of Geo-stationary satellites are required for global coverage of T.V transmission.

Define angular velocity give its units and dimensions.

Why banked tracks are needed for turns?

What is meant by moment of inertia? Explain its significance.

State the law of conversation of angular momentum.

ICS Part 1 Physics Short Questions Test

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