SOLUTION: The work W (in joules) done when lifting an object varies jointly with the mass m (in kilograms) of the object and the height h (in meters) that the object is lifted. The work done
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Question 624078: The work W (in joules) done when lifting an object varies jointly with the mass m (in kilograms) of the object and the height h (in meters) that the object is lifted. The work done when a 120-kilogram object is lifted 1.8 meters is 2116.8 joules. How much work is done when lifting a 100-kilogram object 1.5 meters?
I tried converting kilograms to newtons to see how they got 2116.8 and I got 1176.798 newtons, then I multiplied that by 1.8 and I got 2118.2364 Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! The work W (in joules) done when lifting an object varies jointly with the mass m (in kilograms) of the object and the height h (in meters) that the object is lifted. The work done when a 120-kilogram object is lifted 1.8 meters is 2116.8 joules. How much work is done when lifting a 100-kilogram object 1.5 meters?
I tried converting kilograms to newtons to see how they got 2116.8 and I got 1176.798 newtons, then I multiplied that by 1.8 and I got 2118.2364
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9.8 is commonly used for conversion.
120*9.8 = 1176 N
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100*9.8*1.5 = 1470 J
