Ashleymsmith
11.06.2020 •
Physics
PLEASE HELP QUICKLY
A student wants to lift design a wheel and axle to lift a 400 N bucket of water from the bottom of a well. She already has a wheel with a 50 cm radius, and she is able to
steadily apply an 80 N force. What should the radius of the axle be so that she can lift the bucket with this simple machine?
0.4 cm
64000 cm
10 cm
16000 cm
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Ответ:
h= 1.5 m
Explanation:
Use formula for potential Energy
U=mgh
75= (5.0) (10) h
h= 1.5 m