Power is calculated as work per unit time, and work in turn is calculated as force multiplied by distance. In this case, the force required is equivalent to the weight of the barbell multiplied by acceleration due to gravity.
P = W/t = Fd/t = mgd/t = (200 kg)(9.81 m/s^2)(2 m)/2.2 s = 1783.64 Watts.

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3 years ago

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Why is it impossible to build a machine that produces more energy than it uses?

Irina18 [472]

Because then it could mess up the machine with to much energy

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3 years ago

Which Chinese man was leader of the National People's Party, called the Guomindang, in 1925?

Len [333]

<span>C. Mao Zedong
Hope this helps!~</span>

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