Chapter 10 GRAVITATION

How to convert the S I unit of Pressure and the C G S unit of Pressure?

Solution : S I unit of Pressure is Pascal ( Pa ) = N/m2 = ( kg m /s2 ) / m2 = kg m-1s-2 C G S unit of Pressure = Dyne/ cm2 = ( g cm /s2 ) / cm2 = g cm-1s-2 Method 1 1N = 105 dyne , 1m = 102 …

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Archimedes

Archimedes was a Greek scientist. He discovered the principle, subsequently named after him, after noticing that the water in a bathtub overflowed when he stepped into it. He ran through the streets shouting “Eureka!”, which means “I have got it”. This knowledge helped him to determine the purity of the gold in the crown made …

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BUOYANCY

The force due to the gravitational attraction of the earth acts on the bottle in a downward direction. So the bottle is pulled downwards. But the water exerts an upward force on the bottle. Thus, the bottle is pushed upwards. We have learnt that the weight of an object is the force due to the …

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