Question

Consider following forces: (w) Force due
to tension along a string, (x) Normal force
given by a surface, (y) Force due to air
resistance and (z) Buoyant force or upthrust
given by a fluid
Which of these are electromagnetic forces?​

Answer 1

Answer: In the following options, buoyant force or upthrust given by a fluid is the correct option.

Explanation: Both buoyant force and electromagnetic force

have the same microscopic electromagnetic interaction. The upthrust needs gravity for the creation of pressure on the fluid, which results in an upwards net force. The normal force that a surface acted on a body, it also has gravity as a "trigger".

Answer 2

Both buoyant force and electromagnetic force are electromagnetic forces.

Option (Z) is correct.

Explanation:

• The same microscopic electromagnetic interaction is present in buoyant force and electromagnetic force.

• Buoyant force is the normal force that is applied by a surface on a body.

• These forces have the upthrust force which needs gravity to create pressure no the fluid.
• This prressure results in an upward force which is known as Buoyant force.
• This force also has gravity as a "trigger".