5. Two blocks with unequal masses, M and m (M = 2m), are connected by a light, very long cord passing over a pulley of negligible mass, as shown in the figure, and then released. Friction is negligible. If one of your classmates calculated that, once released, the acceleration of the blocks would be g, without doing any calculations, say whether or not this could be a reasonable value for the acceleration. Claim: The va lue of g is not reasonayle caiculations (I did this after mry claim) Mg -t - Ma Mg-mg: 2mg - mg -mg: ma (M+m) a Zmg -mg = (2mim)a mg: 3ma 3 M
5. Two blocks with unequal masses, M and m (M = 2m), are connected by a light, very long cord passing over a pulley of negligible mass, as shown in the figure, and then released. Friction is negligible. If one of your classmates calculated that, once released, the acceleration of the blocks would be g, without doing any calculations, say whether or not this could be a reasonable value for the acceleration. Claim: The va lue of g is not reasonayle caiculations (I did this after mry claim) Mg -t - Ma Mg-mg: 2mg - mg -mg: ma (M+m) a Zmg -mg = (2mim)a mg: 3ma 3 M
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I included two pictures. Please show me how to approach the problem in the correct manner based on the feedback given. It is okay to completely change the answer if you need to. Please give a reasoning to why the claim is not reasonable and the work needed to back this up.
Transcribed Image Text:5. Two blocks with unequal masses, M and m (M = 2m), are connected by a light, very long cord passing over a pulley of
negligible mass, as shown in the figure, and then released. Friction is negligible.
If one of your classmates calculated that, once released, the acceleration of the blocks would be g, without
doing any calculations, say whether or not this could be a reasonable value for the acceleration.
Claim: The va lue of
caiculations (I did this after ry claim)
Mg -t - Ma
Mg- ing : (M+m)a
2mg - mg = (2m+m)a
mg: 3ma
3g is not reasonable
-mg: ma
'
9:9
%3D
M
![5. Two blocks with unequal masses, M and (M-2m), are connected by a light, very long cord passing over a pulley of
negligible mass, as shown in the figure, and then released. Friction is negligible.
If one of your classmates calculated that, once released, the acceleration of the blocks would bea, without
doing any calculations, say whether or not this could be a reasonable valan far the accekeration.
calcalations
Mg -T: Ma
Mg-ng:
Zng -ng = (2m1m)a
mg- 3ma
did this after
Claim: The value of
49 is not reasonable)
F-mg: ma
(M+ m) a'
6. Two men, Joel and Jerry, punh against a (strongly-anchored) wall. Jerry stops after 10 min, while Joel is able to push
for 5.0 min longer. Compare the work they do.
A) Both men do positive work, but Joel does 75% more work than Jerry. :.d. Cos(0)
Ok, but you didn't say any reasoning
for "why* the claim is unreasonable.
So that means that you just wrote
down the answer, with no work.
B) Both men do positive work, but Joel does 50% more work than Jerry.
C) Hoth men do positive work, but Jerry does 50% more work than Joel. Be cause displacement l)
D) Both men do positive work, but Joel does 25% more work than Jerry. Of the wall is 0, no
E) Neither of them does any work.
woik was dore,
Why not? It's never ok just to write
answers in this class without
7. A child slides down frictionless playground slides of equal Jeight, tarting from rest at the top.
ngso
(K.E),
justification. Where's your work for
these answers? I can't even give
[..]
a. Ilow does the child's acceleration compane on a shallow slide versus a steep slide? (Uar <,>, or)
anv feedback on auestions witho
92>9, → mgsin@2 Smasin@n
Because O, >☺,](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F58685b70-af35-449c-a900-687c4077d4c2%2Fb2434878-9f09-4d39-afdc-e2f8d1332a11%2Fn7z70z_processed.png&w=3840&q=75)
Transcribed Image Text:5. Two blocks with unequal masses, M and (M-2m), are connected by a light, very long cord passing over a pulley of
negligible mass, as shown in the figure, and then released. Friction is negligible.
If one of your classmates calculated that, once released, the acceleration of the blocks would bea, without
doing any calculations, say whether or not this could be a reasonable valan far the accekeration.
calcalations
Mg -T: Ma
Mg-ng:
Zng -ng = (2m1m)a
mg- 3ma
did this after
Claim: The value of
49 is not reasonable)
F-mg: ma
(M+ m) a'
6. Two men, Joel and Jerry, punh against a (strongly-anchored) wall. Jerry stops after 10 min, while Joel is able to push
for 5.0 min longer. Compare the work they do.
A) Both men do positive work, but Joel does 75% more work than Jerry. :.d. Cos(0)
Ok, but you didn't say any reasoning
for "why* the claim is unreasonable.
So that means that you just wrote
down the answer, with no work.
B) Both men do positive work, but Joel does 50% more work than Jerry.
C) Hoth men do positive work, but Jerry does 50% more work than Joel. Be cause displacement l)
D) Both men do positive work, but Joel does 25% more work than Jerry. Of the wall is 0, no
E) Neither of them does any work.
woik was dore,
Why not? It's never ok just to write
answers in this class without
7. A child slides down frictionless playground slides of equal Jeight, tarting from rest at the top.
ngso
(K.E),
justification. Where's your work for
these answers? I can't even give
[..]
a. Ilow does the child's acceleration compane on a shallow slide versus a steep slide? (Uar <,>, or)
anv feedback on auestions witho
92>9, → mgsin@2 Smasin@n
Because O, >☺,
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