Phy 201
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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: ->->->->->->->->->->->-> :
6kg(9.8m/s/s)-5kg(9.8m/s/s)= 9.8N
• 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: ->->->->->->->->->->->-> :
The initial push is -1.8m/sec. After 1 sec, gravitational pull from the other mass will cause this to slow. This acceleration would be 9.8N=(a)(11kg)= .89m/s/s. After one second, the velocity will be -0.91m/s.
• 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 velocity and acceleration are in opposite direction sand the system slows.
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10 mins
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&#Your work looks good. Let me know if you have any questions. &#