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?
2*5=10
2*6=12
answer/question/discussion: ->->->->->->->->->->->-> :
• 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?
5*1.8=9
5*9=45
answer/question/discussion: ->->->->->->->->->->->-> :
• 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?
Same direction and slows down.
answer/question/discussion: ->->->->->->->->->->->-> :
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10
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Solution
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