EBK PHYSICS FOR SCIENTISTS & ENGINEERS
5th Edition
ISBN: 9780134296074
Author: GIANCOLI
Publisher: VST
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(II) A square uniform raft, 18 m by 18 m, of mass 6200 kg, is
used as a ferryboat. If three cars, each of mass 1350 kg,
occupy the NE, SE, and SW corners, determine the CM of
the loaded ferryboat relative to the center of the raft.
(II) The masses of the Earth and Moon are 5.98 x1024 and 7.35x1022respectively, and their centers are separated by 3.84x108 m(a) Where is the CM of the Earth–Moon system located? (b) What can you say about the motion of the Earth–Moon system about the Sun, and of the Earth and Moon separately about the Sun?
(III) Determine the CM of the uniform thin L-shaped con-
struction brace shown in Fig. 7–40.
y
- 2.06 m -
A
0.20 m
CMA
CM
B
1.48 m
CMg
FIGURE 7-40 Problem 54.
This L-shaped object has uniform
thickness d (not shown).
0.20 m
Chapter 9 Solutions
EBK PHYSICS FOR SCIENTISTS & ENGINEERS
Ch. 9.1 - Prob. 1AECh. 9.1 - Light carries momentum, so if a light beam strikes...Ch. 9.2 - In Example 93, what result would you get if (a)...Ch. 9.2 - Prob. 1DECh. 9.2 - Return to the Chapter-Opening Questions, page 214,...Ch. 9.8 - Calculate the CM of the three people in Example...Ch. 9.8 - Prob. 1GECh. 9.9 - A woman stands up in a rowboat and walks from one...Ch. 9 - We claim that momentum is conserved. Yet most...Ch. 9 - A light object and a heavy object have the same...
Ch. 9 - When a person jumps from a tree to the ground,...Ch. 9 - Prob. 4QCh. 9 - Explain, on the basis of conservation of momentum,...Ch. 9 - Prob. 6QCh. 9 - If a falling ball were to make a perfectly elastic...Ch. 9 - Prob. 8QCh. 9 - It is said that in ancient times a rich man with a...Ch. 9 - The speed of a tennis ball on the return of a...Ch. 9 - Is it possible for an object to receive a larger...Ch. 9 - How could a force give zero impulse over a nonzero...Ch. 9 - In a collision between two cars, which would you...Ch. 9 - Prob. 14QCh. 9 - Prob. 15QCh. 9 - At a hydroelectric power plant, water is directed...Ch. 9 - A squash hall hits a wall at a 45 angle as shown...Ch. 9 - Prob. 18QCh. 9 - Why can a batter hit a pitched baseball farther...Ch. 9 - If a 20-passenger plane is not full, sometimes...Ch. 9 - Prob. 21QCh. 9 - Why is the CM of a 1-m length of pipe at its...Ch. 9 - Describe an analytic way of determining the CM of...Ch. 9 - Prob. 24QCh. 9 - Bob and Jim decide to play tug-of-war on a...Ch. 9 - Prob. 26QCh. 9 - Prob. 27QCh. 9 - Prob. 28QCh. 9 - Prob. 29QCh. 9 - Prob. 30QCh. 9 - At a carnival game you try to knock over a heavy...Ch. 9 - Prob. 1MCQCh. 9 - Prob. 3MCQCh. 9 - Prob. 4MCQCh. 9 - Prob. 5MCQCh. 9 - Prob. 6MCQCh. 9 - Prob. 7MCQCh. 9 - Prob. 8MCQCh. 9 - Prob. 9MCQCh. 9 - Prob. 10MCQCh. 9 - Prob. 11MCQCh. 9 - Prob. 12MCQCh. 9 - Prob. 13MCQCh. 9 - Prob. 1PCh. 9 - Prob. 2PCh. 9 - Prob. 3PCh. 9 - Prob. 4PCh. 9 - Prob. 5PCh. 9 - Prob. 6PCh. 9 - Prob. 7PCh. 9 - Prob. 8PCh. 9 - Prob. 9PCh. 9 - Prob. 10PCh. 9 - Prob. 11PCh. 9 - Prob. 13PCh. 9 - Prob. 14PCh. 9 - Prob. 15PCh. 9 - Prob. 16PCh. 9 - Prob. 17PCh. 9 - Prob. 18PCh. 9 - Prob. 19PCh. 9 - Prob. 20PCh. 9 - Prob. 21PCh. 9 - Prob. 22PCh. 9 - (II) Suppose the force acting on a tennis hall...Ch. 9 - (II) The force on a bullet is given by the formula...Ch. 9 - (II) (a) A molecule of mass m and speed v strikes...Ch. 9 - Prob. 26PCh. 9 - Prob. 27PCh. 9 - Prob. 28PCh. 9 - Prob. 29PCh. 9 - Prob. 30PCh. 9 - Prob. 31PCh. 9 - Prob. 32PCh. 9 - Prob. 33PCh. 9 - Prob. 34PCh. 9 - Prob. 35PCh. 9 - Prob. 36PCh. 9 - (I) In a ballistic pendulum experiment, projectile...Ch. 9 - Prob. 38PCh. 9 - Prob. 39PCh. 9 - Prob. 40PCh. 9 - Prob. 41PCh. 9 - Prob. 42PCh. 9 - Prob. 43PCh. 9 - Prob. 44PCh. 9 - Prob. 45PCh. 9 - Prob. 46PCh. 9 - Prob. 47PCh. 9 - Prob. 48PCh. 9 - Prob. 49PCh. 9 - (II) A neutron collides elastically with a helium...Ch. 9 - Prob. 51PCh. 9 - (III) A neon atom (m = 20.0 u) makes a perfectly...Ch. 9 - Prob. 53PCh. 9 - (I) The distance between a carbon atom (m = 12 u)...Ch. 9 - Prob. 55PCh. 9 - Prob. 56PCh. 9 - (II) Three cubes, of side l0,2l0, and 3l0 are...Ch. 9 - Prob. 58PCh. 9 - Prob. 59PCh. 9 - Prob. 60PCh. 9 - Prob. 61PCh. 9 - Prob. 62PCh. 9 - Prob. 63PCh. 9 - (III) Determine the CM of a uniform pyramid that...Ch. 9 - (II) The masses of the Earth and Moon are 5.98 ...Ch. 9 - Prob. 66PCh. 9 - Prob. 67PCh. 9 - Prob. 68PCh. 9 - Prob. 69PCh. 9 - Prob. 70PCh. 9 - Prob. 71PCh. 9 - Prob. 72PCh. 9 - Prob. 73PCh. 9 - Prob. 74PCh. 9 - Prob. 76PCh. 9 - Prob. 77GPCh. 9 - Prob. 78GPCh. 9 - Prob. 79GPCh. 9 - Prob. 80GPCh. 9 - Prob. 81GPCh. 9 - Prob. 82GPCh. 9 - Prob. 83GPCh. 9 - Prob. 84GPCh. 9 - Prob. 85GPCh. 9 - Prob. 86GPCh. 9 - Prob. 88GPCh. 9 - Prob. 92GPCh. 9 - Prob. 94GPCh. 9 - Prob. 95GPCh. 9 - Prob. 96GPCh. 9 - Prob. 97GPCh. 9 - A massless spring with spring constant k is placed...Ch. 9 - Prob. 99GPCh. 9 - The gravitational slingshot effect. Figure 955...Ch. 9 - Prob. 101GPCh. 9 - Prob. 102GPCh. 9 - Prob. 103GPCh. 9 - Prob. 104GP
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- (II) Two people, one of mass 85 kg and the other of mass55 kg, sit in a rowboat of mass 58 kg. With the boatinitially at rest, the two people, who have been sitting atopposite ends of the boat, 3.0 m apart from each other,now exchange seats. How far and in what direction willthe boat move?arrow_forwardTo get up on the roof, a person (mass 70.0 kg) places 6.00-m aluminum ladder (mass 10.0 kg) against the house on a concrete pad with the base of ladder 2.00 m from the house. The ladder rests against a plastic rain gutter, which we can assume to frictionless. The center of ladder is 2.00 m from the bottom. The person is standing 3.00 m from the bottom. Find the normal reaction and friction forces on the ladder at its base.arrow_forward(II) During a Chicago storm, winds can whip horizontally at speeds of 100 km/h. If the air strikes a person at the rate of 40 kg/s per square meter and is brought to rest, estimate the force of the wind on a person. Assume the person is 1.50 m high and 0.50 m wide. Compare to the typical maximum force of friction (µ z 1.0) between the person and the ground, if the person has a mass of 70 kg.arrow_forward
- (II) Two people, one of mass 85 kg and the other of mass 55 kg, sit in a rowboat of mass 78 kg. With the boat initially at rest, the two people, who have been sitting at opposite ends of the boat, 3.0 m apart from each other, now exchange seats. How far and in what direction will the boat move?arrow_forward(II) A 52-kg woman and a 72-kg man stand 10.0 m apart onnearly frictionless ice. (a) How far from the woman is their CM?(b) If each holds one end of a rope, and the man pulls onthe rope so that he moves 2.5 m, how far from the womanwill he be now? (c) How far will the man have moved whenhe collides with the woman?arrow_forward[Problem 1] Find the displacements (During the period person is walking) (1) the platform, (2) the person, (3) the center of mass. 80 kg) sits at the rear end of a platform (mass m 20 kg, length 4 m), initially moving at - A Person (M 4i m/s over a friction-free surface. - A Person walks at 2 m/s relatives to the platform and then sits down at the front end. (At t = 0)arrow_forward
- A rod of length 28.00 cm has linear density (mass per length) given by 2 = 50.0 + 23.0x where x is the distance from one end, and 1 is measured in grams/meter. (a) What is its mass? g (b) How far from the x = 0 end is its center of mass?arrow_forward(II) A uniform circular plate of radius 2R has a circular hole of radius R cut out of Hed it. The center C' of the smaller circle is a distance 0.80R from the center C of 2R the larger circle, Fig. 9-45. What is the position of the center of mass of the plate? [Hint: Try subtraction.] illoo ods CC' 0.80R Al diivw FIGURE 9-45 Arp ebc Problem 66. AYA HMarrow_forward(II) A 28-g rifle bullet traveling 190 m/s embeds itself in a3.1-kg pendulum hanging on a 2.8-m-long string, whichmakes the pendulum swing upward in an arc. Determinethe vertical and horizontal components of the pendulum’smaximum displacement.arrow_forward
- 13-82. The cyclist is coasting freely down the hill with a speed of 15 m/s at y = 0.2 m. Determine the resultant normal reaction on the bicycle and the rate of increase in speed at the instant shown. The bicycle and rider have a total mass of 80 kg. Neglect friction, the mass of the wheels, and the size of the bicycle. y = 0.2e Prob. 13-82arrow_forwardTo keep the calculations fairly simple, but still reasonable, we shall model a human leg that is 92.0 cm long (measured from the hip joint) by assuming that the upper leg and the lower leg (which includes the foot) have equal lengths and that each of them is uniform. For a 70.0 kg person, the mass of the upper leg is 8.60 kg, while that of the lower leg (including the foot) is 5.25 kg. Find the location of the center of mass of this leg, relative to the hip joint, if it is (a) fully extended, and (b) bent at the knee to form a right angle with the upper leg.arrow_forward(II) A uniform circular plate of radius 2R has a circular hole of radius R cut out of it. The center C' of the smaller circle is a distance 0.80R from the center C of 2R the larger circle, Fig. 9–45. What is the position of the center of mass of the plate? [Hint: Try subtraction.] R 0.80R FIGURE 9-45 Problem 66.arrow_forward
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