A Weigh Scale Measures the Weight of an Object by Balancing

question 40

Multiple Choice

A weigh scale measures the weight of an object by balancing its weight against that of a fixed "reference" weight sliding along a scale until equilibrium is reached. If the weight to be measured is suspended at twice its distance from the fulcrum, which of the following actions would NOT restore equilibrium?

• A)quadrupling the reference weight
• B)quadrupling the distance of the reference weight from the fulcrum
• C)doubling the reference weight and its distance from the fulcrum
• D)replacing the reference weight by two others of half its mass: one at the original position and the other 3 times further from the fulcrum

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