Fundamentals of Physics Extended
10th Edition
ISBN: 9781118230725
Author: David Halliday, Robert Resnick, Jearl Walker
Publisher: Wiley, John & Sons, Incorporated
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Chapter 8, Problem 4P
Figure 8-31 shows a ball with mass m = 0.341 kg attached to the end of a thin rod with length L = 0.452 m and negligible mass. The other end of the rod is pivoted so that the ball can move in a vertical circle. The rod is held horizontally as shown and then given enough of a downward push to cause the ball to swing down and around and just reach the vertically up position, with zero speed there. How much work is done on the ball by the gravitational force from the initial point to (a) the lowest point, (b) the highest point, and (c) the point on the right level with the initial point? If the gravitational potential energy of the ball–Earth system is taken to be zero at the initial point, what is it when the ball reaches (d) the lowest point, (e) the highest point, and (f) the point on the right level with the initial point? (g) Suppose the rod were pushed harder so that the ball passed through the highest point with a nonzero speed. Would ΔUg from the lowest point to the highest point then be greater than, less than, or the same as it was when the ball stopped at the highest point?
Figure 8-31 Problems 4 and 14.
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Chapter 8 Solutions
Fundamentals of Physics Extended
Ch. 8 - In Fig. 8-18, a horizontally moving block can take...Ch. 8 - Figure 8-19 gives the potential energy function of...Ch. 8 - Figure 8-20 shows one direct path and four...Ch. 8 - In Fig. 8-21, a small, initially stationary block...Ch. 8 - In Fig. 8-22, a block slides from A to C along a...Ch. 8 - In Fig. 8-23a, you pull upward on a rope that is...Ch. 8 - The arrangement shown in Fig. 8-24 is similar to...Ch. 8 - In Fig. 8-25, a block slides along a track that...Ch. 8 - Figure 8-26 shows three situations involving a...Ch. 8 - Figure 8-27 shows three plums that are launched...
Ch. 8 - When a particle moves from f to i and from j to i...Ch. 8 - SSM What is the spring constant of a spring that...Ch. 8 - In Fig. 8-29, a single frictionless roller-coaster...Ch. 8 - You drop a 2.00 kg book to a friend who stands on...Ch. 8 - Figure 8-31 shows a ball with mass m = 0.341 kg...Ch. 8 - SSM In Fig. 8-32, a 2.00 g ice flake is released...Ch. 8 - In Fig. 8-33, a small block of mass m = 0.032 kg...Ch. 8 - Figure 8-34 shows a thin rod, of length L = 2.00 m...Ch. 8 - A 1.50 kg snowball is fired from a cliff 12.5 m...Ch. 8 - GO In Problem 2, what is the speed of the car at a...Ch. 8 - a In Problem 3, what is the speed of the book when...Ch. 8 - SSM WWW a In Problem 5, what is the speed of the...Ch. 8 - a In Problem 8, using energy techniques rather...Ch. 8 - SSM A 5.0 g marble is fired vertically upward...Ch. 8 - a In Problem 4, what initial speed must be given...Ch. 8 - SSM In Fig. 8-35, a runaway truck with failed...Ch. 8 - A 700 g block is released from rest at height h0...Ch. 8 - In Problem 6, what are the magnitudes of a the...Ch. 8 - a In Problem 7, what is the speed of the ball at...Ch. 8 - GO Figure 8-36 shows an 8.00 kg stone at rest on a...Ch. 8 - GO A pendulum consists of a 2.0 kg stone swinging...Ch. 8 - Figure 8-34 shows a pendulum of length L = 1.25 m....Ch. 8 - A 60 kg skier starts from rest at height H = 20 m...Ch. 8 - ILW The string in Fig. 8-38 is L = 120 cm long,...Ch. 8 - A block of mass m = 2.0 kg is dropped from height...Ch. 8 - At t = 0 a 1.0 kg ball is thrown from a tall tower...Ch. 8 - A conservative force F=(6.0x12)i N, where x is in...Ch. 8 - Tarzan, who weighs 688 N, swings from a cliff at...Ch. 8 - Figure 8-41a applies to the spring in a cork gun...Ch. 8 - SSM WWW In Fig. 8-42, a block of mass m = 12 kg is...Ch. 8 - GO A 2.0 kg breadbox on a frictionless incline of...Ch. 8 - ILW A block with mass m = 2.00 kg is placed...Ch. 8 - In Fig. 8-45, a chain is held on a frictionless...Ch. 8 - GO In Fig. 8-46, a spring with k = 170 N/m is at...Ch. 8 - GO A boy is initially seated on the top of a...Ch. 8 - GO In Fig. 8-42, a block of mass m = 3.20 kg...Ch. 8 - GO Two children are playing a game in which they...Ch. 8 - A uniform cord of length 25 cm and mass 15 g is...Ch. 8 - Figure 8-49 shows a plot of potential energy U...Ch. 8 - GO Figure 8-50 shows a plot of potential energy U...Ch. 8 - The potential energy of a diatomic molecule a...Ch. 8 - A single conservative force Fx acts on a 1.0 kg...Ch. 8 - A worker pushed a 27 kg block 9.2 m along a level...Ch. 8 - A collie drags its bed box across a floor by...Ch. 8 - A horizontal force of magnitude 35.0 N pushes a...Ch. 8 - SSM A rope is used to pull a 3.57 kg block at...Ch. 8 - An outfielder throws a baseball with an initial...Ch. 8 - A 75 g Frisbee is thrown from a point 1.1 m above...Ch. 8 - In Fig. 8-51, a block slides down an incline. 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At a point...Ch. 8 - A stone with a weight of 5.29 N is launched...Ch. 8 - Prob. 60PCh. 8 - When a click beetle is upside down on its back, it...Ch. 8 - GO In Fig. 8-55, a block slides along a path that...Ch. 8 - The cable of the 1800 kg elevator cab in Fig. 8-56...Ch. 8 - GO In Fig. 8-57, a block is released from rest at...Ch. 8 - GO A particle can slide along a track with...Ch. 8 - A 3.2 kg sloth hangs 3.0 m above the ground. a...Ch. 8 - SSM A spring k = 200 N/m is fixed at the top of a...Ch. 8 - From the edge of a cliff, a 0.55 kg projectile is...Ch. 8 - SSM In Fig. 8-60, the pulley has negligible mass,...Ch. 8 - GO In Fig. 8-38, the string is L = 120 cm long,...Ch. 8 - SSM In Fig. 8-51, a block is sent sliding down a...Ch. 8 - Two snowy peaks are at heights H = 850 m and h =...Ch. 8 - SSM The temperature of a plastic cube is monitored...Ch. 8 - A skier weighing 600 N goes over a frictionless...Ch. 8 - SSM To form a pendulum, a 0.092 kg ball is...Ch. 8 - We move a particle along an x axis, first outward...Ch. 8 - SSM A conservative force Fx acts on a 2.00 kg...Ch. 8 - At a certain factory, 300 kg crates are dropped...Ch. 8 - SSM A 1500 kg car begins sliding down a 5.0...Ch. 8 - In Fig. 8-65, a 1400 kg block of granite is pulled...Ch. 8 - A particle can move along only an x axis, where...Ch. 8 - For the arrangement of forces in Problem 81, a...Ch. 8 - SSM A 15 kg block is accelerated at 2.0 m/s2 along...Ch. 8 - A certain spring is found not to conform to Hookes...Ch. 8 - SSM Each second, 1200 m3 of water passes over a...Ch. 8 - GO In Fig. 8-67, a small block is sent through...Ch. 8 - SSM A massless rigid rod of length L has a ball of...Ch. 8 - A 1.50 kg water balloon is shot straight up with...Ch. 8 - A 2.50 kg beverage can is thrown directly downward...Ch. 8 - A constant horizontal force moves a 50 kg trunk...Ch. 8 - GO Two blocks, of masses M = 2.0 kg and 2M, are...Ch. 8 - A volcanic ash flow is moving across horizontal...Ch. 8 - A playground slide is in the form of an arc of a...Ch. 8 - The luxury liner Queen Elizabeth 2 has a...Ch. 8 - A factory worker accidentally releases a 180 kg...Ch. 8 - If a 70 kg baseball player steals home by sliding...Ch. 8 - A 0.50 kg banana is thrown directly upward with an...Ch. 8 - A metal tool is sharpened by being held against...Ch. 8 - A swimmer moves through the water at an average...Ch. 8 - An automobile with passengers has weight 16 400 N...Ch. 8 - A 0.63 kg ball thrown directly upward with an...Ch. 8 - The summit of Mount Everest is 8850 m above sea...Ch. 8 - A sprinter who weighs 670 N runs the first 7.0 m...Ch. 8 - A 20 kg object is acted on by a conservative force...Ch. 8 - A machine pulls a 40 kg trunk 2.0 m up a 40 ramp...Ch. 8 - Prob. 106PCh. 8 - The only force acting on a particle is...Ch. 8 - In 1981, Daniel Goodwin climbed 443 m up the...Ch. 8 - A 60.0 kg circus performer slides 4.00 m down a...Ch. 8 - A 5.0 kg block is projected at 5.0 m/s up a plane...Ch. 8 - A 9.40 kg projectile is fired vertically upward....Ch. 8 - A 70.0 kg man jumping from a window lands in an...Ch. 8 - A 30 g bullet moving a horizontal velocity of 500...Ch. 8 - A 1500 kg car starts from rest on a horizontal...Ch. 8 - A 1.50 kg snowball is shot upward at an angle of...Ch. 8 - A 68 kg sky diver falls at a constant terminal...Ch. 8 - A 20 kg block on a horizontal surface is attached...Ch. 8 - Resistance to the motion of an automobile consists...Ch. 8 - SSM A 50 g ball is thrown from a window with an...Ch. 8 - A spring with a spring constant of 3200 N/m is...Ch. 8 - A locomotive with a power capability of 1.5 MW can...Ch. 8 - SSM A 0.42 kg shuffleboard disk is initially at...Ch. 8 - A river descends 15 m through rapids. The speed of...Ch. 8 - The magnitude of the gravitational force between a...Ch. 8 - Approximately 5.5 106 kg of water falls 50 m over...Ch. 8 - To make a pendulum, a 300 g ball is attached to...Ch. 8 - In a circus act, a 60 kg clown is shot from a...Ch. 8 - A 70 kg firefighter slides, from rest, 4.3 m down...Ch. 8 - The surface of the continental United States has...Ch. 8 - A spring with spring constant k = 200 N/m is...Ch. 8 - Fasten one end of a vertical spring to a ceiling,...Ch. 8 - The maximum force you can exert on an object with...Ch. 8 - Conservative force Fx acts on a particle that...Ch. 8 - Figure 8-73a shows a molecule consisting of two...Ch. 8 - Repeat Problem 83, but now with the block...Ch. 8 - A spring with spring constant k = 620 N/m is...
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