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- Tell me? In a physical balance working on the principle of moments, when 5 mg weight is placed on the left pan, the beam becomes horizontal. Both the empty pans of the balance are of equal mass. Which of the following statements is corre
In a physical balance working on the principle of moments, when 5 mg weight is placed on the left pan, the beam becomes horizontal. Both the empty pans of the balance are of equal mass. Which of the following statements is correct ?
- Option 1)
Left arm is longer than the right arm
- Option 2)
Both the arms are of same length
- Option 3)
Left arm is shorter than the right arm
- Option 4)
Every object that is weighed using this balance appears lighter than its actual weight.
Answers (1)
As we learnt in
Point of application of force -
Point at which if net force is assumed to be acting then it will produce the same effect of both translation & rotation.
-
For balance
Anticlockwise Moment = Clockwise Moment
i.e. Load load arm = effect
effort arm
When 5 mg weight is placed, load arm shifts to left side, hence left arm becomes shorter than right arm.
Option 1)
Left arm is longer than the right arm
This is an incorrect option.
Option 2)
Both the arms are of same length
This is an incorrect option.
Option 3)
Left arm is shorter than the right arm
This is the correct option.
Option 4)
Every object that is weighed using this balance appears lighter than its actual weight.
This is an incorrect option.
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