Question

A 180-km/h wind blowing over the flat roof of a house causes the roof to lift...

A 180-km/h wind blowing over the flat roof of a house causes the roof to lift off the house

Part A

If the house is 6.8 m × 13.8 m in size, estimate the weight of the roof. Assume the roof is not nailed down.

Express your answer to two significant figures and include the appropriate units.
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Answer #1

= 1562.5*6.8m*13.8m = 146625N

Converting this force into kg, we get the weight of the roof as,

W = 146625*(1/9.8) = 1.49*105 kg m/(s^2) = 1.5*105 N

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