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Phy 121
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: ->->->->->->->->->->->-> :
The net force is 9.8 Newtons. The magnitude would be .89m/s/s. The direction of acceleration is towards the 6kg side.
I took 5 and 6 kg and multiplied by 9.8 which the free fall of gravity. I then subtracted the two outcomes and divide by 11 which is the total mass, to give me the magnitude.
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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: ->->->->->->->->->->->-> :
I took 1.8 and multiplied it by two and got 3.8 meters/second for the speed of the 5kg mass, whereas the motion would still be downward.
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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: ->->->->->->->->->->->-> :
Yes the velocity and acceleration would be in the exact same direction. I would assume the system would slow down because of the heavier object on the other side.
@& Acceleration is toward the more massive side, which experiences the greater gravitational force.
Velocity is toward the less massive side.
So the two are in opposite directions.*@
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About 10 minutes
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self-critique rating