Question

阿蓁

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2, The figure below shows acord attached toacart that can slide along africtionless
horizontal raill aligned along an x axis. “The left end of the cord is pulled over a
pulley, of negliglible mass and friction and at cord helighth =1.20 m, so the cart Slides
from X1 三 3.00 m to x2 = 1.00 m.” During the move, the tension in the cord is a
constant 25.0 N. What is the change in the kinetic energy of the cart during the
move》 ITIensions Ti and T? are equal in magnitude here, but try both ways to solve
the problem: (90. Ti pulls the cord and the cart together.(b). T2 pulls the cart only.

Both ways should lead to the same answer.

物理