How many dry pine logs with a section of 10×10 and a length of 3 m can be carried at one time on the trunk of a car?
| December 4, 2020 | education
How many dry pine logs with a section of 10×10 and a length of 3 m can be carried at one time on the trunk of a car? density of dry pine is 400kg / m2. according to the operating instructions, no more than 50 kg can be placed on the roof rack.
In order to find the number of bars, you need to find the mass of one log, the density formula p = m / v we derive the formula for the mass of one bar m = p × v, where v = a × b × c.
m = 400 * 0.10 * 0.10 * 4 = 16kg
50/16 = (approximately) 3 bars
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