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Phy 201
Your 'cq_1_12.1' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
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Masses of 5 kg and 6 kg are suspended from opposite sides of a light frictionless pulley and are released.
• What will be the net force on the 2-mass system and what will be the magnitude and direction of its acceleration?
answer/question/discussion: ->->->->->->->->->->->-> :
5 kg * 9.8 m/s^2= 49 N
6 kg * 9.8 m/s^2 = 58.8 N
Fnet = 49 N + 58.8 N = 107.8 N
@& One gravitational force tends to accelerate the system in one direction, the other in the opposite direction.*@
The direction will be positive.
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• If you give the system a push so that at the instant of release the 5 kg object is descending at 1.8 meters / second, what will be the speed and direction of motion of the 5 kg mass 1 second later?
answer/question/discussion: ->->->->->->->->->->->-> :
Motion is positive.
Velocity = 1.8 m/s
Mass = 5 kg
A = Fnet / mass
A = 107.8 N / 5 kg
A = 21.6 m/s
I’m not quite sure how to determine the speed and direction of motion. I guessed that the direction of motion is positive because of the positive velocity that the object is traveling. I guessed and calculated the speed of the object to be 21.6 m/s by using the formula A = Fnet / m.
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• During the first second, are the velocity and acceleration of the system in the same direction or in opposite directions, and does the system slow down or speed up?
answer/question/discussion: ->->->->->->->->->->->-> :
During the first second, the velocity and acceleration are in the same direction and the system is speeding up.
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30 minutes
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&#See any notes I might have inserted into your document, and before looking at the link below see if you can modify your solutions. If there are no notes, this does not mean that your solution is completely correct.
Then please compare your old and new solutions with the expanded discussion at the link
Solution
Self-critique your solutions, if this is necessary, according to the usual criteria. Insert any revisions, questions, etc. into a copy of this posted document. Mark any insertions with &&&& so they can be easily identified.If your solution is completely consistent with the given solution, you need do nothing further with this problem. &#