Calculate how long of a lever you would need. (It will be gigantic!) Use the following information:
Calculate how long of a lever you would need. (It will be gigantic!) Use the following information:
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PES 1150 -
GENERAL PHYSICS LABI
4.) Let's say you had to move the Earth with a lever. According to Archimedes, this is
possible if you had a long enough lever. You could use the Moon as a fulcrum:
Earth
Lever
1500 N
Мon
Calculate how long of a lever you would need. (It will be gigantic!) Use the following
information:
Mass of the Earth = 5.97 x 1024kg
Distance from the Earth to the Moon = 384,000 km
Force you can exert on the lever = 1500N
Convert your answer to light-years: 1 light year =
9.46 x 1012 km
How big is your answer? How does this yery large answer compare to the size of the
Milky Way galaxy (100,000 ly)? (Hint: First, calculate the weight of the Earth
using Mg.)
Expert Solution
Step 1
Weight of earth = Mg
W = 5.97×1024×9.8 N
W = 58.506×1024 N
To lift the earth we need to apply torque equal to the torque provided by weight of earth through fulcrum.
Torque by Earth's weight = torque applied by 1500 N force
W×r = F×l
Where l is length of lever.
l = W×r/F
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