Two girls of equal weight run up the stairs to the second floor. One of them rises in 30 s, the other in 55 s.
| August 26, 2020 | Education
Two girls of equal weight run up the stairs to the second floor. One of them rises in 30 s, the other in 55 s.
a) Is the same mechanical work performed?
b) Do girls develop the same power when lifting?
a) The mechanical work done by girls is the same; b) Girls develop different powers. The first girl has more.
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