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2D Motion as Two 1D Motions

A column of a...

Question

A column of air 1 sq. em. in cross-sectional area extending from sea-level to the top of the atmosphere weights approximately.

A

933 g wt

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B

1013 g wt

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C

1136 g wt

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D

1360 g wt

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Solution

The correct option is B 1013 g wt
Air Pressure at sea level = 101000 Pa.
Pascal :- Newton per square meter
force = 101000 N , Area =1 sq meter.
There are 10000 cm sq per meter sq ,
Weight or ma = using F = mass x
Acceleration of gravity ,
10.1 N corresponds to mass of 10.1 N /9.8 = 1.03 kg (approximate)

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