Tag: heliocentric model

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Questions Related to heliocentric model

Multiple choice physics universe and space heliocentric model introduction to gravitation introduction to gravity

The gravitational force is a

  1. contact force

  2. action at a distance force

  3. non contact force

  4. both (B) and (C)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Gravitational force is a action distance force because it can interact with an object even they are not in physical contact with each other, yet they are able to exert a push or a pull despite their physical operation. Hence gravitational force is a action at a distance force.

Gravitational force is also a non contact force because non contact force is a force which acts on an object without coming in physically contact with each other which is similar to a action at a distance force.

Multiple choice physics universe and space heliocentric model introduction to gravitation introduction to gravity

The weakest forces of interaction among all classified forces are

  1. electrostatic forces

  2. gravitational forces

  3. weak nuclear forces

  4. electromagnetic forces
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Gravitational force is the weakest of all the forces because its coupling constant is small in value. Gravity cannot be felt in day to day life because of the huge universe surrounding earth. Electromagnetic force is the strongest of all  force as it deals with microscopic particles.

Multiple choice physics universe and space heliocentric model introduction to gravitation introduction to gravity

The gravitational force between two bodies is

  1. repulsive at large distances

  2. attractive at all places

  3. attractive at short distances

  4. repulsive at short distances
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Gravitation is a natural phenomenon by which all things with mass are brought towards one another. It is an attractive force and behaves uniformly for all values of $r$ (distance between the two bodies).

Multiple choice physics universe and space heliocentric model introduction to gravitation introduction to gravity

On the surface of the earth, force of gravitational attraction between two masses kept at distance d apart is 6 Newtons. If these two masses are taken to the surface of the moon and kept at the same distance d, the force between them will be

  1. 1N

  2. 36N
  3. $\frac { 1 }{ 6 } $N

  4. 6N
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Gravitational force by Newton's law must remain the same.


hence, $(D)$ is correct.