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Standard X

Physics

Static Equilibrium

Describe a si...

Question

Describe a simple experiment to veryfy the principle of moments, if you are supplied with a metre rule, a fulcrum and two springs with slotted weights.

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Solution

To verify the principle of moments, we can use the following experiment:

Step 1: Place the rule on the fulcrum.

Step 2: Suspend the two weights on either side. The meter rule may tilt to one side.

Step 3: Adjust the slotted weights or their distances from the fulcrum to make the rule HORIZONTAL.

Now calculate the total clockwise moment which is equal to $W_{1} l_{1}$ and the total anticlockwise moment which is equal to $W_{2} l_{2}$ .

We will see that $W_{1} l_{1} = W_{2} l_{2}$ , which verifies the principle of moments.

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