Problem 16.4 A 150 million-kg cargo ship starts from
rest. The total force exerted on it by its engines and
hydrodynamic drag (in newtons) can be approximated
as a function of time in seconds by Ft = 937,500
0.65t 2 . Use the principle of impulse and mom

Problem 13.55 Gas guns are used to investigate
the properties of materials subjected to high-velocity
impacts. A projectile is accelerated through the barrel
of the gun by gas at high pressure. Assume that the
acceleration of the projectile is given by a

Review- Part 4
NO.1
OK, attention class. As I was saying, the
modern Olympics are the result of Pierre de
Coubertins enthusiasm for sport and love
of history. In the late 1800s, he was
inspired by others who tried to recreate the
Olympics and by archaeo

Problem 13.166 The train on the circular track is traveling at a constant speed of 15 m/s . The train on the
straight track is traveling at 6 m/s and is increasing its
speed at 0.6 m/s2. In terms of the earth-fixed coordinate
system shown, what is the acc

Problem 8.3 In Active Example 8.1, suppose that the
triangular area is reoriented as shown. Use integration
to determine Iy and ky .
Solution: The height of a vertical strip of width dx is h h/bx,
so the area
dA D
h
h
x
b
y
h
dx.
We can use this expressio

Problem 14.89 The freeway off-ramp is circular with
60-m radius (Fig. a). The off-ramp has a slope = 15
(Fig. b). If the coefficient of static friction between the
tires of a car and the road is s = 0.4, what is the
maximum speed at which it can enter the

Problem 15.38 The 400-N wreckers ball swings at
the end of a 25-m cable. If the magnitude of the balls
velocity at position 1 is 4 m/s, what is the magnitude of
its velocity just before it hits the wall at position 2?
65
95
Solution:
1
U = (400 N)(25 m si

Problem 9.27 The ladder and the person weigh 150 N
and 900 N, respectively. The center of mass of the 3.6 m
ladder is at its midpoint. The angle D 30 . Assume that
the wall exerts a negligible friction force on the ladder.
If x D 1.2 m, what is the magnit

Problem 15.97 The 20-kg cylinder is released at
the position shown and falls onto the linear spring
(k = 3000 N/m). Use conservation of energy to
determine how far down the cylinder moves after
contacting the spring.
Solution: Choose the base of the cylin