Physics Fundamentals
2nd Edition
ISBN: 9780971313453
Author: Vincent P. Coletta
Publisher: PHYSICS CURRICULUM+INSTRUCT.INC.
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Chapter 4, Problem 15P
To determine
To Find:The acceleration of the mass.
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As shown in Fig. 4–70, five balls (masses 2.00, 2.05, 2.10,
2.15, 2.20 kg) hang from a crossbar. Each mass is sup-
ported by "5-lb test" fishing line which will break when
its tension force exceeds 22.2 N (= 5.00 lb). When this
device is placed in an elevator, which accelerates upward,
only the lines attached to the 2.05 and 2.00 kg masses do
not break. Within what range is the elevator's acceleration?
2.20 2.15 2.10 .05 2.00 kg|
FIGURE 4-70
Problem 84.
Two blocks made of different materials, connected by a thin
cord, slide down a plane ramp inclined at an angle 0 to the
horizontal, Fig. 4–76 (block B is above block A). The masses
of the blocks are ma and mB, and the coefficients of fric-
tion are ua and µr. If ma = mß = 5.0 kg, and
HA = 0.20 and uR = 0.30, determine
(a) the acceleration of the blocks and
(b) the tension in the cord, for an
angle 0 = 32°.
MB
FIGURE 4–76
Problem 94.
(a) Find the resultant force and calculate its magnitude and direction (relative to the positive x-axis)
(b) This resultant force now acts on an object (modelled as a particle) of mass 12kg. Find the acceleration and calculate its magnitude.
Chapter 4 Solutions
Physics Fundamentals
Ch. 4 - Prob. 1QCh. 4 - Prob. 2QCh. 4 - Prob. 3QCh. 4 - Prob. 4QCh. 4 - Prob. 5QCh. 4 - Prob. 6QCh. 4 - Prob. 7QCh. 4 - Prob. 8QCh. 4 - Prob. 9QCh. 4 - Prob. 10Q
Ch. 4 - Prob. 11QCh. 4 - Prob. 12QCh. 4 - Prob. 13QCh. 4 - Prob. 14QCh. 4 - Prob. 15QCh. 4 - Prob. 16QCh. 4 - Prob. 1PCh. 4 - Prob. 2PCh. 4 - Prob. 3PCh. 4 - Prob. 4PCh. 4 - Prob. 5PCh. 4 - Prob. 6PCh. 4 - Prob. 7PCh. 4 - Prob. 8PCh. 4 - Prob. 9PCh. 4 - Prob. 10PCh. 4 - Prob. 11PCh. 4 - Prob. 12PCh. 4 - Prob. 13PCh. 4 - Prob. 14PCh. 4 - Prob. 15PCh. 4 - Prob. 16PCh. 4 - Prob. 17PCh. 4 - Prob. 18PCh. 4 - Prob. 19PCh. 4 - Prob. 20PCh. 4 - Prob. 21PCh. 4 - Prob. 22PCh. 4 - Prob. 23PCh. 4 - Prob. 24PCh. 4 - Prob. 25PCh. 4 - Prob. 26PCh. 4 - Prob. 27PCh. 4 - Prob. 28PCh. 4 - Prob. 29PCh. 4 - Prob. 30PCh. 4 - Prob. 31PCh. 4 - Prob. 32PCh. 4 - Prob. 33PCh. 4 - Prob. 34PCh. 4 - Prob. 35PCh. 4 - Prob. 36PCh. 4 - Prob. 37PCh. 4 - Prob. 38PCh. 4 - Prob. 39PCh. 4 - Prob. 40PCh. 4 - Prob. 41PCh. 4 - Prob. 42PCh. 4 - Prob. 43PCh. 4 - Prob. 44PCh. 4 - Prob. 45PCh. 4 - Prob. 46PCh. 4 - Prob. 47PCh. 4 - Prob. 48PCh. 4 - Prob. 49PCh. 4 - Prob. 50PCh. 4 - Prob. 51PCh. 4 - Prob. 52PCh. 4 - Prob. 53PCh. 4 - Prob. 54PCh. 4 - Prob. 55PCh. 4 - Prob. 56P
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