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5 pa os pressure is required to be exerted on an are of ` 250 m^2` .A box is placed on that area and the surface of cantact is exactly `250 m^2` .What should be the mass of the box so that exactly 5 pa of pressure can be exerted ? |
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Answer» `Pressure ="Force"/"Area" ` `5 = "Force "/250 (1 "pa" = 1 N//m ^2)` `therefore` R reqired force = 1250 N Let m be the mass of the object `therefore m xx g = 1250` `therefore m xx 10=1250` `therefore m= 1250/10 kg = 125 kg " "(because g ~~ 10 m s^(-2))` |
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