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When a body is weighed on an ordinary balance we demand that the arm should be horizontal if the weights on the two pans are equal. Suppose equal weights are put on the two pans, the arm is kept at an angle with the horizontal and released. Is the toque of the two weights about the middle point(point of support) zero? If so,why does the arm rotates and finally becomes horizontal?

When a body is weighed on an ordinary balance we demand that the arm should be horizontal if the weights on the two pans are equal. Suppose equal weights are put on the two pans, the arm is kept at an angle with the horizontal and released.
Is the toque of the two weights about the middle point(point of support) zero?
If so,why does the arm rotates and finally becomes horizontal?

Grade:12

1 Answers

swapan jain
30 Points
10 years ago

Due to angular momentum

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