Physics for Scientists and Engineers with Modern Physics
4th Edition
ISBN: 9780131495081
Author: Douglas C. Giancoli
Publisher: Addison-Wesley
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Chapter 10, Problem 85GP
(a) A yo-yo is made of two solid cylindrical disks, each of mass 0.050 kg and diameter 0.075 m, joined by a (concentric) thin solid cylindrical hub of mass 0.0050 kg and diameter 0.010 m. Use conservation of energy to calculate the linear speed of the yo-yo just before it reaches the end of its 1.0-m-long string, if it is released from rest. (b) What fraction of its kinetic energy is rotational?
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Chapter 10 Solutions
Physics for Scientists and Engineers with Modern Physics
Ch. 10.1 - In Example 103, we found that the carousel, after...Ch. 10.4 - Two forces (FB = 20 N and FA = 30 N) are applied...Ch. 10.7 - In Figs. 1020f and g, the moments of inertia for a...Ch. 10.8 - Estimate the energy stored in the rotational...Ch. 10.9 - Return to the Chapter-Opening Question, p. 248,...Ch. 10.9 - Find the acceleration a of a yo-yo whose spindle...Ch. 10 - A bicycle odometer (which counts revolutions and...Ch. 10 - Suppose a disk rotates at constant angular...Ch. 10 - Could a nonrigid object be described by a single...Ch. 10 - Can a small force ever exert a greater torque than...
Ch. 10 - Why is it more difficult to do a sit-up with your...Ch. 10 - Mammals that depend on being able to run fast have...Ch. 10 - If the net force on a system is zero, is the net...Ch. 10 - Two inclines have the same height but make...Ch. 10 - Two spheres look identical and have the same mass....Ch. 10 - Two solid spheres simultaneously start rolling...Ch. 10 - Why do tightrope walkers (Fig. 1043) carry a long,...Ch. 10 - A sphere and a cylinder have the same radius and...Ch. 10 - The moment of inertia of this textbook would be...Ch. 10 - The moment of inertia of a rotating solid disk...Ch. 10 - Prob. 15QCh. 10 - (I) Express the following angles in radians: (a)...Ch. 10 - Prob. 2PCh. 10 - Prob. 3PCh. 10 - (I) The blades in a blender rotate at a rate of...Ch. 10 - (II) (a) A grinding wheel 0.35 m in diameter...Ch. 10 - (II) A bicycle with tires 68 cm in diameter...Ch. 10 - (II) Calculate the angular velocity of (a) the...Ch. 10 - (II) A rotating merry-go-round makes one complete...Ch. 10 - (II) What is the linear speed of a point (a) on...Ch. 10 - (II) Calculate the angular velocity of the Earth...Ch. 10 - Prob. 11PCh. 10 - (II) A 64-cm-diameter wheel accelerates uniformly...Ch. 10 - (II) In traveling to the Moon, astronauts aboard...Ch. 10 - (II) A turntable of radius R1 is turned by a...Ch. 10 - (II) The axle of a wheel is mounted on supports...Ch. 10 - (I) An automobile engine slows down from 3500 rpm...Ch. 10 - (I) A centrifuge accelerates uniformly front rest...Ch. 10 - (I) Pilots can be tested for the stresses of...Ch. 10 - (II) A cooling fan is turned off when it is...Ch. 10 - (II) Using calculus, derive the angular kinematic...Ch. 10 - (II) A small rubber wheel is used to drive a large...Ch. 10 - (II) The angle through which a rotating wheel has...Ch. 10 - (II) The angular acceleration of a wheel, as a...Ch. 10 - (I) A 62-kg person riding a bike puts all her...Ch. 10 - (I) Calculate the net torque about the axle of the...Ch. 10 - (II) A person exerts a horizontal force of 32 N on...Ch. 10 - (II) Two blocks, each of mass m, are attached to...Ch. 10 - (II) A wheel of diameter 27.0 cm is constrained to...Ch. 10 - (II) The bolts on the cylinder head of an engine...Ch. 10 - (II) Determine the net torque on the 2.0-m-long...Ch. 10 - (I) Determine the moment of inertia of a 10.8-kg...Ch. 10 - (I) Estimate the moment of inertia of a bicycle...Ch. 10 - (II) A potter is shaping a bowl on a potters wheel...Ch. 10 - (II) An oxygen molecule consists of two oxygen...Ch. 10 - (II) A softball player swings a bat, accelerating...Ch. 10 - (II) A grinding wheel is a uniform cylinder with a...Ch. 10 - (II) A small 650-g ball on the end of a thin,...Ch. 10 - (II) The forearm in Fig. 1052 accelerates a 3.6-kg...Ch. 10 - (II) Assume that a 1.00-kg ball is thrown solely...Ch. 10 - (II) Calculate the moment of inertia of the array...Ch. 10 - (II) A merry-go-round accelerates from rest to...Ch. 10 - (II) A 0.72-m-diameter solid sphere can be rotated...Ch. 10 - (II) Suppose the force FT in the cord hanging from...Ch. 10 - (II) A dad pushes tangentially on a small...Ch. 10 - Prob. 45PCh. 10 - (II) Two blocks are connected by a light string...Ch. 10 - (II) A helicopter rotor blade can be considered a...Ch. 10 - (II) A centrifuge rotor rotating at 10,300 rpm is...Ch. 10 - (II) When discussing moments of inertia,...Ch. 10 - Prob. 50PCh. 10 - (III) An Atwoods machine consists of two masses,...Ch. 10 - (III) A string passing over a pulley has a 3.80-kg...Ch. 10 - (III) A hammer thrower accelerates the hammer...Ch. 10 - (III) A thin rod of length l stands vertically on...Ch. 10 - (I) Use the parallel-axis theorem to show that the...Ch. 10 - (II) Determine the moment of inertia of a 19-kg...Ch. 10 - (II) Two uniform solid spheres of mass M and...Ch. 10 - (II) A ball of mass M and radius r1 on the end of...Ch. 10 - (II) A thin 7.0-kg wheel of radius 32 cm is...Ch. 10 - (III) Derive the formula for the moment of inertia...Ch. 10 - (III) (a) Derive the formula given in Fig. 1020h...Ch. 10 - (I) An automobile engine develops a torque of 255m...Ch. 10 - (I) A centrifuge rotor has a moment of inertia of...Ch. 10 - (II) A rotating uniform cylindrical platform of...Ch. 10 - (II) A merry-go-round has a mass of 1640 kg and a...Ch. 10 - (II) A Uniform thin rod of length l and mass M is...Ch. 10 - (II) Two masses, mA = 35.0 kg and mB = 38.0 kg,...Ch. 10 - (III) A 4.00-kg mass and a 3.00-kg mass are...Ch. 10 - (III) A 2.30-m-long pole is balanced vertically on...Ch. 10 - (I) Calculate the translational speed of a...Ch. 10 - (I) A bowling ball of mass 7.3kg and radius 9.0 cm...Ch. 10 - (I) Estimate the kinetic energy of the Earth with...Ch. 10 - (II) A sphere of radius r0 = 24.5 cm and mass m =...Ch. 10 - (II) A narrow but solid spool of thread has radius...Ch. 10 - (II) A ball of radius r0 rolls on the inside of a...Ch. 10 - (II) A solid rubber ball rests on the floor of a...Ch. 10 - (II) A thin, hollow 0.545-kg section of pipe of...Ch. 10 - (II) In Example 1020, (a) how far has the ball...Ch. 10 - (III) The 1100-kg mass of a car includes four...Ch. 10 - (III) A wheel with rotational inertia I=12MR2...Ch. 10 - (III) A small sphere of radius r0 = 1.5 cm rolls...Ch. 10 - (I) A rolling hall slows down because the normal...Ch. 10 - A large spool of rope rolls on the ground with the...Ch. 10 - On a 12.0-cm-diameter audio compact disc (CD),...Ch. 10 - (a) A yo-yo is made of two solid cylindrical...Ch. 10 - A cyclist accelerates from rest at a rate of l.00...Ch. 10 - Suppose David puts a 0.50-kg rock into a sling of...Ch. 10 - A 1.4-kg grindstone in the shape of a uniform...Ch. 10 - Bicycle gears: (a) How is the angular velocity R...Ch. 10 - Figure 1065 illustrates an H2O molecule. The O H...Ch. 10 - One possibility for a low-pollution automobile is...Ch. 10 - A hollow cylinder (hoop) is rolling on a...Ch. 10 - Prob. 93GPCh. 10 - A marble of mass m and radius r rolls along the...Ch. 10 - The density (mass per unit length) of a thin rod...Ch. 10 - If a billiard ball is hit in just the right way by...Ch. 10 - If the coefficient of static friction between...Ch. 10 - A cord connected at one end to a block which can...Ch. 10 - The radius of the roll of paper shown in Fig. 1070...Ch. 10 - A solid uniform disk of mass 21.0 kg and radius...Ch. 10 - When bicycle and motorcycle riders pop a wheelie,...Ch. 10 - A crucial part of a piece of machinery starts as a...Ch. 10 - A thin uniform stick of mass M and length l is...Ch. 10 - (a) For the yo-yo-like cylinder of Example 1019,...Ch. 10 - (II) Determine the torque produced about the...Ch. 10 - (II) Use the expression that was derived in...
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