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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.
** CQ_1_12.1_labelMessages **
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: ->->->->->->->->->->->-> :
F=5kg*9.8m/s^2
F=49N
F=6*9.8m/s^2
F=58.8N
Fnet=58.8N-49N
Fnet=9.8N
M=5kg+6kg
M=11kg
A=9.8N/11kg
A=.89m/s^2
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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: ->->->->->->->->->->->-> :
‘dv=.89m/s^2*1s
‘dv=.89m/s
1 second later the 5kg object will be moving by .89m/s instead of the 1.8m/s
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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: ->->->->->->->->->->->-> :
The first second interval the acceleration appears to be positive and the velocity appears to be negative.
Acceleration and velocity are going in opposite directions which will lead to the object slowing down
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30 min
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&#Good responses. Let me know if you have questions. &#