 9.1DQ: Which of the following formulas is valid if the angular acceleratio...
 9.1E: (a) What angle in radians is subtended by an arc 1.50 m long on the...
 9.2DQ: A diatomic molecule can be modeled as two point masses, ?m?1 and ?m...
 9.2E: An airplane propeller is rotating at 1900 rpm (rev/min). (a) Comput...
 9.3DQ: What is the difference between tangential and radial acceleration f...
 9.3E: CP CALC? The angular velocity of a flywheel obeys the equation ?z(t...
 9.4DQ: In ?Fig. Q9.4,? all points on the chain have the same linear speed....
 9.4E: CALC? A fan blade rotates with angular velocity given by ?z(t) = ? ...
 9.5DQ: In Fig. Q9.4, how are the radial accelerations of points at the tee...
 9.5E: CALC A child is pushing a merrygoround. The angle through which t...
 9.6DQ: A flywheel rotates with constant angular velocity. Does a point on ...
 9.6E: CALC? At t = 0 the current to a dc electric motor is reversed, resu...
 9.7DQ: What is the purpose of the spin cycle of a washing machine? Explain...
 9.7E: CALC? The angle ? through which a disk drive turns is given by ?(t)...
 9.8DQ: Although angular velocity and angular acceleration can be treated a...
 9.8E: A wheel is rotating about an axis that is in the zdirection. The a...
 9.9DQ: Can you think of a body that has the same moment of inertia for all...
 9.9E: A bicycle wheel has an initial angular velocity of 1.50 rad/s. (a) ...
 9.10DQ: To maximize the moment of inertia of a flywheel while minimizing it...
 9.10E: An electric fan is turned off, and its angular velocity decreases u...
 9.11DQ: How might you determine experimentally the moment of inertia of an ...
 9.11E: The rotating blade of a blender turns with constant angular acceler...
 9.12DQ: A cylindrical body has mass M and radius R. Can the mass be distrib...
 9.12E: (a) Derive Eq. (9.12) by combining Eqs. (9.7) and (9.11) to elimina...
 9.13DQ: Describe how you could use part (b) of Table 9.2 to derive the resu...
 9.13E: A turntable rotates with a constant 2.25 rad/s2 angular acceleratio...
 9.14DQ: A hollow spherical shell of radius R that is rotating about an axis...
 9.14E: A circular saw blade 0.200 m in diameter starts from rest. In 6.00 ...
 9.15DQ: For the equations for I given in parts (a) and (b) of Table 9.2 to ...
 9.15E: A highspeed flywheel in a motor is spinning at 500 rpm when a powe...
 9.16DQ: In part (d) of Table 9.2, the thickness of the plate must be much l...
 9.16E: At t = 0 a grinding wheel has an angular velocity of 24.0 rad/s. It...
 9.17DQ: Two identical balls, A and B, are each attached to very light strin...
 9.17E: A safety device brings the blade of a power mower from an initial a...
 9.18DQ: An elaborate pulley consists of four identical balls at the ends of...
 9.18E: In a charming 19thcentury hotel, an oldstyle elevator is connecte...
 9.19DQ: You can use any angular measure—radians, degrees, or revolutions—in...
 9.19E: Using Appendix F, along with the fact that the earth spins on its a...
 9.20DQ: When calculating the moment of inertia of an object, can we treat a...
 9.20E: Compact Disc.? A compact disc (CD) stores music in a coded pattern ...
 9.21DQ: A wheel is rotating about an axis perpendicular to the plane of the...
 9.21E: A wheel of diameter 40.0 cm starts from rest and rotates with a con...
 9.22DQ: Estimate your own moment of inertia about a vertical axis through t...
 9.22E: You are to design a rotating cylindrical axle to lift 800N buckets...
 9.23E: A flywheel with a radius of 0.300 m starts from rest and accelerate...
 9.24E: An electric turntable 0.750 m in diameter is rotating about a fixed...
 9.25E: Centrifuge.? An advertisement claims that a centrifuge takes up onl...
 9.26E: (a) Derive an equation for the radial acceleration that includes ??...
 9.27E: Electric Drill.? According to the shop manual, when drilling a 12.7...
 9.28E: At t = 3.00 s a point on the rim of a 0.200mradius wheel has a ta...
 9.29E: The spin cycles of a washing machine have two angular speeds, 423 r...
 9.31E: Calculate the moment of inertia of each of the following uniform ob...
 9.32E: Small blocks, each with mass ?m?, are clamped at the ends and at th...
 9.30E: A uniform bar has two small balls glued to its ends. The bar is 2.0...
 9.34E: A uniform disk of radius ?R? is cut in half so that the remaining h...
 9.35E: A wagon wheel is constructed as shown in ?Fig. E9.33?. The radius o...
 9.36E: An airplane propeller is 2.08 m in length (from tip to tip) with ma...
 9.37E: A compound disk of outside diameter 140.0 cm is made up of a unifor...
 9.38E: A wheel is turning about an axis through its center with constant a...
 9.39E: A uniform sphere with mass 28.0 kg and radius 0.380 m is rotating a...
 9.40E: A hollow spherical shell has mass 8.20 kg and radius 0.220 m. It is...
 9.41E: Energy from the Moon?? Suppose that some time in the future we deci...
 9.42E: You need to design an industrial turntable that is 60.0 cm in diame...
 9.43E: The flywheel of a gasoline engine is required to give up 500 J of k...
 9.44E: A light, flexible rope is wrapped several times around a ?hollow? c...
 9.45E: Energy is to be stored in a 70.0kg flywheel in the shape of a unif...
 9.46E: Suppose the solid cylinder in the apparatus described in Example 9....
 9.47E: A frictionless pulley has the shape of a uniform solid disk of mass...
 9.48E: A bucket of mass ?m? is tied to a massless cable that is wrapped ar...
 9.49E: CP? A thin, light wire is wrapped around the rim of a wheel (?Fig. ...
 9.50E: A uniform 2.00m ladder of mass 9.00 kg is leaning against a vertic...
 9.51E: How I Scales.? If we multiply all the design dimensions of an objec...
 9.52E: A uniform 3.00 kg rope 24.0 m long lies on the ground at the top of...
 9.53E: About what axis will a uniform, balsawood sphere have the same mom...
 9.54E: Find the moment of inertia of a hoop (a thinwalled, hollow ring) w...
 9.55E: A thin, rectangular sheet of metal has mass ?M? and sides of length...
 9.56E: Problem?(a) For the thin rectangular plate shown in part (d) of Tab...
 9.57E: A thin uniform rod of mass ?M? and length ?L? is bent at its center...
 9.58E: CALC? Use Eq. (9.20) to calculate the moment of inertia of a slende...
 9.59E: CALC? Use Eq. (9.20) to calculate the moment of inertia of a unifor...
 9.60E: CALC? A slender rod with length ?L? has a mass per unit length that...
 9.61P: A flywheel has angular acceleration ??z?(t) = 8.60 rad/s2 ? (2.30 r...
 9.62P: CALC? A uniform disk with radius R = 0.400 m and mass 30.0 kg rotat...
 9.63P: A circular saw blade with radius 0.120 m starts from rest and turns...
 9.64P: CALC? A roller in a printing press turns through an angle ?(t) give...
 9.65P: CP CALC? A disk of radius 25.0 cm is free to turn about an axle per...
 9.66P: When a toy car is rapidly scooted across the floor, it stores energ...
 9.67P: A classic 1957 Chevrolet Corvette of mass 1240 kg starts from rest ...
 9.68P: Engineers are designing a system by which a falling mass m imparts ...
 9.69P: A vacuum cleaner belt is looped over a shaft of radius 0.45 cm and ...
 9.70P: The motor of a table saw is rotating at 3450 rev/min. A pulley atta...
 9.71P: While riding a multispeed bicycle, the rider can select the radius ...
 9.72P: A computer disk drive is turned on starting from rest and has const...
 9.73P: A wheel changes its angular velocity with a constant angular accele...
 9.74P: A sphere consists of a solid wooden ball of uniform density 800 kg/...
 9.75P: It has been argued that power plants should make use of offpeak ho...
 9.76P: While redesigning a rocket engine, you want to reduce its weight by...
 9.77P: The earth, which is not a uniform sphere, has a moment of inertia o...
 9.78P: A uniform, solid disk with mass ?m? and radius ?R? is pivoted about...
 9.79P: A metal sign for a car dealership is a thin, uniform right triangle...
 9.80P: Measuring ?I?.? As an intern with an engineering firm, you are aske...
 9.81P: CP? A meter stick with a mass of 0.180 kg is pivoted about one end ...
 9.82P: Exactly one turn of a flexible rope with mass ?m? is wrapped around...
 9.83P: The pulley in ?Fig. P9.75? has radius R and a moment of inertia ?I?...
 9.84P: The pulley in ?Fig. P9.76? has radius 0.160 m and moment of inertia...
 9.85P: You hang a thin hoop with radius R ? ? over a nail at the rim of th...
 9.86P: A passenger bus in Zurich, Switzerland, derived its motive power fr...
 9.87P: Two metal disks, one with radius R1 = 2.50 cm and mass M1 = 0.80 kg...
 9.88P: A thin, light wire is wrapped around the rim of a wheel, as shown i...
 9.89P: In the system shown in Fig. 9.17, a 12.0kg mass is released from r...
 9.90P: In ?Fig. P9.80?, the cylinder and pulley turn without friction abou...
 9.91P: A thin, flat, uniform disk has mass ?M? and radius ?R?. A circular ...
 9.92P: BIO Human Rotational Energy.? A dancer is spinning at 72 rpm about ...
 9.93P: BIO The Kinetic Energy of Walking.? If a person of mass M simply mo...
 9.94P: BIO The Kinetic Energy of Running.? Using 9.81 as a guide, apply it...
 9.95P: PerpendicularAxis Theorem?. Consider a rigid body that is a thin, ...
 9.96P: A thin, uniform rod is bent into a square of side length ?a?. If th...
 9.97P: A cylinder with radius ?R? and mass ?M? has density that increases ...
 9.98P: CALC Neutron Stars and Supernova Remnants.? The Crab Nebula is a cl...
 9.99P: CALC? A sphere with radius R = 0.200 m has density ? that decreases...
 9.100CP: CALC? Calculate the moment of inertia of a uniform solid cone about...
 9.101CP: CALC? On a compact disc (CD), music is coded in a pattern of tiny ...
Solutions for Chapter 9: University Physics 13th Edition
Full solutions for University Physics  13th Edition
ISBN: 9780321675460
Solutions for Chapter 9
Get Full SolutionsChapter 9 includes 122 full stepbystep solutions. University Physics was written by and is associated to the ISBN: 9780321675460. Since 122 problems in chapter 9 have been answered, more than 323766 students have viewed full stepbystep solutions from this chapter. This expansive textbook survival guide covers the following chapters and their solutions. This textbook survival guide was created for the textbook: University Physics, edition: 13.

//
parallel

any symbol
average (indicated by a bar over a symbol—e.g., v¯ is average velocity)

°C
Celsius degree

°F
Fahrenheit degree