Two metal disks, one with radius R1 = 2.5 cm and mass M1 = 0.8 kg and the other with radius R2 = 5.0 cm and mass M2 = 1.6 kg, are welded together and mounted on a frictionless axis through their common center. a) what is the total moment of inertia of the two disks? b) A light string is wrapped around the edge of the smaller disk, and a 1.5 kg block is suspended from the free end of the string. If the block is released from rest, what will be the blocks speed after it has fallen 2.0 m? c) Repeat part B, but this time with string wrapped around the larger disk. In which case, if any, is the block moving faster and why? 不 1.50 kg
Two metal disks, one with radius R1 = 2.5 cm and mass M1 = 0.8 kg and the other with radius R2 = 5.0 cm and mass M2 = 1.6 kg, are welded together and mounted on a frictionless axis through their common center. a) what is the total moment of inertia of the two disks? b) A light string is wrapped around the edge of the smaller disk, and a 1.5 kg block is suspended from the free end of the string. If the block is released from rest, what will be the blocks speed after it has fallen 2.0 m? c) Repeat part B, but this time with string wrapped around the larger disk. In which case, if any, is the block moving faster and why? 不 1.50 kg
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Transcribed Image Text:Two metal disks, one with radius R1 = 2.5
cm and mass M1 = 0.8 kg and the other
with radius R2 = 5.0 cm and mass M2 =
1.6 kg, are welded together and mounted
on a frictionless axis through their
common center.
a) what is the total moment of inertia of
the two disks?
b) A light string is wrapped around the
edge of the smaller disk, and a 1.5 kg
block is suspended from the free end of
the string. If the block is released from
rest, what will be the blocks speed after it
has fallen 2.0 m?
c) Repeat part B, but this time with string
wrapped around the larger disk. In which
case, if any, is the block moving faster
and why?
Transcribed Image Text:不
1.50 kg
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