Fundamentals Of Physics
11th Edition
ISBN: 9781119286240
Author: David Halliday, Robert Resnick, Jearl Walker
Publisher: WILEY
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Chapter 4, Problem 42P
In 1939 or 1940, Emanuel Zacchini took his human cannonball act to an extreme: After being shot from a cannon, he soared over three Ferris wheels and into a net (Fig. 4-39). Assume that he is launched with a speed of 26.5 m/s and at an angle of 53.0°. (a) Treating him as a particle, calculate his clearance over the first wheel. (b) If he reached maximum height over the middle wheel, by how much did he clear it? (c) How far from the cannon should the net’s center have been positioned (neglect air drag)?
Figure 4-39 Problem 42.
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In 1939 or 1940, Emanuel Zacchini took his human cannonball act to an extreme: After belng shot froma cannon, he soared over three
Ferris wheels and into a net (see the figure). Assume that he is launched with a speed of 26 m/s and at an angle of 58° (a) Treating him
as a particle, calculate his clearance over the first wheel. (b) If he reached maximum height over the middle wheel, by how much did he
clear it? (c) How far from the cannon should the net's center have been positioned (neglect air drag)?
-26
15m
3.5m
e,- 58
3.5m
Net
20m-
In 1939 or 1940, Emanuel Zacchini took his human-
cannonball act to an extreme: After being shot
from a cannon, he soared over three Ferris wheels
and into a net (see the figure). Assume that he is
launched with a speed of 26 m/s and at an angle
of 58°. (a) Treating him as a particle, calculate his
clearance over the first wheel. (b) If he reached
maximum height over the middle wheel, by how
much did he clear it? (c) How far from the cannon
should the…
Fig. 4-33 Problem 27.
*28 In Fig 4.34, a stone is pro.
jected at a cliff of height h
with an initial speed of 42.0 mis directed at angle & - 60,0° above
the horizontal. The stone strikes at A, 5.50 s after launching. Find
(a) the height h of the cliff (b) the speed of the stone just before
impact at A, and (c) the maximum height H reached above the
ground.
Fig. 4-34 Problem 28.
A 0.26-kg rock is thrown vertically upward from the top ofa cliff that is 32 m high. When it hits the ground at the baseof the cliff, the rock has a speed of 29 m>s. Assuming that airresistance can be ignored, find (a) the initial speed of the rockand (b) the greatest height of the rock as measured from thebase of the cliff.
Chapter 4 Solutions
Fundamentals Of Physics
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