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A uniform metre rule of mass 100gf is balanced on a fulcrum at mark 40cm by suspending an unknown mass m at the mark 20 cm. (I) Find the value of m. (II) To which side the rule will tilt if the mass m is moved to the 10 cm mark? (III) What is the resultant moment now? (IIII) How can it be balanced by another mass of 50 g? |
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Answer» A uniform metre rule of mass 100gf is balanced on a fulcrum at mark 40cm by suspending an unknown mass m at the mark 20 cm. (I) Find the value of m. (II) To which side the rule will tilt if the mass m is moved to the 10 cm mark? (III) What is the resultant moment now? (IIII) How can it be balanced by another mass of 50 g? |
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