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cflemer
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Homework Statement
A rope of negligible mass passes over a pulley of negligible mass attached to the ceiling. One end of the rope is held by Student A of mass 70 kg, who is at rest above the floor. the opposite end of the rope is held by Student B of mass 60 kg, who is suspended at rest above the floor.
a. Calculate the magnitude of force exerted by the floor on Student a.
Student B now climbs up the rope at a constant acceleration of .25 m/s^2 with respect to the floor.
b. Calculate the tension in the rope while Student B is accelerating.
c. As Student B is acceleration, is Student A pulled upward off the floor? Justify your answer.
d. With what minimum acceleration must Student B climb up the rope to life Student A upward off the floor?
Homework Equations
Ma=70 kg
Mb= 60 kg
Attempt:
(a)F=ma
F=(130 kg) (9.81 m/s^2)
F= 1,275.3 N
d. No, Student B has a smaller mass than student A, thus they will not be able to lift A off the ground.
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