A machine similar to an Atwood machine is used to lift a load of mass mį = 52kg. The load moves on a ramp inclined at an angle of 0 = 23° above the horizontal. One end of a light, inextensible string is tied to the load, and the string runs parallel to the ramp, passes over a light, frictionless pulley, and has a mass m2 = friction between the load and the ramp is µk = 0.20. The physical system is depicted in Figure 1. 38 kg suspended vertically at the other end. The coefficient of kinetic mị m2 Figure 1: Machine used to lift a load. (a) Explain why the work done by tension on the system is zero. (b) The system is initially held at rest, and the mass m2 is then allowed to fall 5.0 m to the ground. When m2 hits the ground, what is the speed of the load m1? (c) After m2 hits the ground, the load m1 continues to slide up the ramp, while the string becomes slack (exerting almost zero tension). What additional distance does mį slide up the ramp after m2 hits the ground?
A machine similar to an Atwood machine is used to lift a load of mass mį = 52kg. The load moves on a ramp inclined at an angle of 0 = 23° above the horizontal. One end of a light, inextensible string is tied to the load, and the string runs parallel to the ramp, passes over a light, frictionless pulley, and has a mass m2 = friction between the load and the ramp is µk = 0.20. The physical system is depicted in Figure 1. 38 kg suspended vertically at the other end. The coefficient of kinetic mị m2 Figure 1: Machine used to lift a load. (a) Explain why the work done by tension on the system is zero. (b) The system is initially held at rest, and the mass m2 is then allowed to fall 5.0 m to the ground. When m2 hits the ground, what is the speed of the load m1? (c) After m2 hits the ground, the load m1 continues to slide up the ramp, while the string becomes slack (exerting almost zero tension). What additional distance does mį slide up the ramp after m2 hits the ground?
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Transcribed Image Text:A machine similar to an Atwood machine is used to lift a load of mass mị = 52 kg. The load moves
on a ramp inclined at an angle of 0 = 23° above the horizontal. One end of a light, inextensible
string is tied to the load, and the string runs parallel to the ramp, passes over a light, frictionless
pulley, and has a mass m2
friction between the load and the ramp
38 kg suspended vertically at the other end. The coefficient of kinetic
0.20. The physical system is depicted in Figure 1.
m2
Figure 1: Machine used to lift a load.
(a) Explain why the work done by tension on the system is zero.
(b) The system is initially held at rest, and the mass m2 is then allowed to fall 5.0 m to the ground.
When m2 hits the ground, what is the speed of the load m1?
(c) After m2 hits the ground, the load m1 continues to slide up the ramp, while the string becomes
slack (exerting almost zero tension). What additional distance does m1
m2 hits the ground?
slide
up
the
ramp
after
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