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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > Water stands at a depth of 15 m behind a reservoir dam. A horizontal pipe 4 cm in diameter passes through the dam 6 m below the surface of water as shown. There is a plug which secures the pipe opening. Then find the friction between the plug and pipe wall.

Water stands at a depth of 15 m behind a reservoir dam. A horizontal pipe 4 cm in diameter passes through the dam 6 m below the surface of water as shown. There is a plug which secures the pipe opening. Then find the friction between the plug and pipe wall.

A U -tube in which the cross - sectional area of the limb on the left is one quarter The gauge pressure in both the tyres of a bicycle is 6.0× 10^5 Pa If the bicycle and the person riding it have a combined mass of 90 kg. find the area of contact of each tyre with ground.