Tag: primary concept of force and energy

Questions Related to primary concept of force and energy

During winter, clothes tend to stick to our body as an action of ______ force.

physics primary concept of force and energy contact and non-contact forces comparing force in magnetic, electric and gravitational fields identifying forces

  1. electrostatic 

  2. muscular

  3. magnetic

  4. contact

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Correct Option: A
Explanation:

Due to electrostatic force clothes tends to stick to our body. 

When an object is rubbed with some materials, it acquires charges and becomes ________ object.

physics primary concept of force and energy contact and non-contact forces comparing force in magnetic, electric and gravitational fields identifying forces

  1. uncharged

  2. charged

  3. neutral

  4. heavy

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Correct Option: B
Explanation:

When object is rubbed with some materials it acquires charges. This object is called as charged object and develops electrostatic force.

Gravitational force is a/an ______ force.

physics primary concept of force and energy contact and non-contact forces comparing force in magnetic, electric and gravitational fields identifying forces

  1. repulsive

  2. attractive

  3. contact

  4. neutral

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Correct Option: B
Explanation:

Gravitational force is an attractive force as it tends to move all objects towards itself.

Under action of which force does water flow from an open tap towards ground?

physics primary concept of force and energy contact and non-contact forces comparing force in magnetic, electric and gravitational fields identifying forces

  1. Electrostatic force

  2. Magnetic force

  3. Gravitational force

  4. None of the above

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Correct Option: C
Explanation:

Objects tend to move downwards to the earth because of gravity of the earth. This force, exerted on the object is known as force of gravity. 

Does moon have its own gravity?

physics primary concept of force and energy contact and non-contact forces comparing force in magnetic, electric and gravitational fields identifying forces

  1. No

  2. Yes

  3. Not known yet

  4. Only during full moon

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Correct Option: B
Explanation:

Gravity is not a property of the earth alone. Every object in the universe exerts a force on every other object. This is called gravitational force. Naturally, moon also has its own gravity.