A series of weights connected by very light cords are given an upward acceleration of 4.00 m/s2 by a pull P, as shown in the figure. A, B, and C are the tensions in the connecting cords. The pull P is closest to
A) 690 N.
B) 490 N.
C) 290 N.
D) 200 N.
E) 50 N.
Answer: A
Physics & Space Science
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