If a metal ball suspended by a rod is at rest, which force is responsible for balancing the force due to gravity? a. the tension in the rod b. the friction of the rod c. the electromagnetic force d. the strong force around the rod

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25-10-2022
Physics

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If a metal ball suspended by a rod is at rest, which force is responsible for balancing the force due to gravity? a. the tension in the rod b. the friction of the rod c. the electromagnetic force d. the strong force around the rod

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contexto1028 contexto1028 · Answer 1 · 2022-11-03T00:50:44-04:00

If a metal ball is suspended by a rod , the forces acting on the system are balanced so there is no motion observed in the system and this is because of the upward tension in the rod .

Option 1 says : the tension in the rod

The gravitational pull that is acting downwards direction and the tension in rod that is acting in a anti parallel direction to the gravitational pull . being on the same line of action and in opposite directions , these forces cancels each other out .

Option 2 says : the friction of rod

Friction acts in cases of contact forces like a drag or pull not in cases of non-contact forces like gravity , thus friction can't balance it .

Option 3 says : the electromagnetic force

There are no charges or magnets present in the system so the electromagnetic force is absent in this case Thus they cant balance the gravitational force.

Option 4 says : the strong force around the rod

The strong force around is not on the line of action of the gravitational pull so it cant balance it.

So out of all the forces only the tension present in the rod is able to balance the gravitational force

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