13Physics - 39 A series of weights connected by very light...

39)
A series of weights connected by very light cords are given an upward acceleration of
4.00 m/s
2 by a pull P , as shown in the figure. A , B , and C are the tensions in the
connecting cords. The SMALLEST of the three tensions, A , B , and C , is closest to
A)
80.0 N.
B)
483 N.
C)
621 N.
D)
196 N.
E)
276 N.
Answer: E
39)
12

SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.
40)
The figure shows a graph of the acceleration of a 125-g object as a function of
the net force acting on it. What is the acceleration at points
A
and
B
40)
?
2
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
41)
The figure shows a graph of the acceleration of an object as a function of the net force
acting on it. The mass of this object, in grams, is closest to
41)