Physics-
General
Easy
Question
A conical block, floats in water with 90% height immersed in it. Height h of the block is equal to the diameter of the block i.e. 20 cm the mass to be kept on block, so that the block just floats at the surface of water is
- 568 gm
- 980 gm
- 112 gm
- 196 gm
The correct answer is: 568 gm
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Assertion: A massless rope thrown over a frictionless pulley has a ladder with a mass of m on one its ends and a counter balancing mass M on its other end. If a man climbs with some velocity then centre of mass of the system (man, ladder and balancing mass) moving upward.
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Reason: Net force on the system is in upward direction is zero.
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B) If both Assertion and Reason are true but Reason is not correct explanation of the Assertion.
C) If Assertion is true but Reason is false.
D) If Assertion is false but Reason is true.
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