nessross1018
07.01.2020 •
Physics
Arock climber uses a pulley system to pull himself 10 m up a tricky part of a rock face. if the pulley system has a mechanical advantage of 3 and the climber weighs 786 n, what force does he use?
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Ответ:
M=Fo/Fi
Fi=Fo/M=763 N/3=262 N.
So we want to input 262 N of force to get 763 N of output force.
Ответ:
In science heat and temperature are related to each other. Heat is the total energy of molecular motion in a substance while temperature is a measure of the average energy of molecular motion in a substance. So, thermal energy comes from a substance whose molecules and atoms are vibrating faster due due to a rise in temperature.
Explanation:
hope it helps