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PHY 121
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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 will be gravity which is 9.8 N for each of the masses.
@& Gravity on either mass exerts a force of 9.8 N for every kilogram of mass.
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I am not sure what the magnitude is?
The direction of its acceleration will be in the direction of the 6 kg because it is heavier.
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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: ->->->->->->->->->->->-> :
1 second later, it will be traveling at a greater speed, correct? I am not really understanding how to figure the motion of this?
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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: ->->->->->->->->->->->-> :
Again, I am not really sure how to determine the direction of the objects. I think the system does speed up though.
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Solution
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