Question 336: Centre of Mass and Rotational Motion

Question

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 ?

Accepted Answer

From principle of moment we know, the anticlockwise moment is equal to clockwise moment when a system is stable or balance.
$$	herefore\,\,\,$$ load $$ 	imes $$ load arm = effect $$ 	imes $$ effect arm
When 5 mg weight is placed on the left pan, load arm shift to left side, hence left arm become shorter than right arm.

Answer

Left arm is longer than the right arm

Answer

Both the arms are of same length

Answer

Left arm is shorter than the right arm

Answer

Every object that is weighed using this balance appears lighter than its
actual weight.

Centre of Mass and Rotational Motion

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 ?

Choose the correct answer: