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sunny78

This physic problem here.

a 40kg barrel is rolled up a 10 meter long ramp to a height of 5 meters

1-how much does the barrel weight

2-if the person exerted an effort force of 250 newtons to roll the barrel along the ramp, what is the efficiency of the ramp?

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home and garden

Posted 2009-09-20T06:12:06Z
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