A simple and practical understanding of conservation of momentum problems is given by the following: When a figure skater makes a jump, he increases his rotation speed by pulling together his arms and legs. This reduces his rotational inertia causing him to spin faster. If the initial spin rate of a figure skater is 1 RPM and he decreases his rotational inertia by half during the spin, what is his final spin rate?

Q: A barbell spins around a pivot at its center at A. The barbell consists of two small balls, each…

A: Given- mass of ball , m = 500 g =0.5 kg length of rod , d = 30 cm =0.30 m radius of rotation , r…

Q: Consider the skater with mass m. What would be her angular momentum relative to the pole at the…

A: The angular momentum is given by the expression Angular momentum = Linear momentum x Perpendicular…

Q: A 0.00600 kg bullet traveling horizontally with speed 1.00 x 103 m/s strikes a 14.9 kg door,…

A: Given m = 14.9 kg g = 9.8  m/sec2  I = 5.28 kgm2  Omega = 1.06 rad /sec We have to find out the…

Q: A 0.00400 kg bullet traveling horizontally with speed 1.00 x 103 m/s strikes a 21.1 kg door,…

A: According to the law of conservation of momentum , the total initial momentum of the system before…

Q: A disk of mass M is spinning freely at 8.77 rad/s when a second identical disk, initially not…

A: Law of conservation of momentum: For changing angular momentum, external torque is to be applied.…

Q: The diagram shows a spinnng ice skater in two different positions. L- lw L- l'w' (a) (b) What…

A: Dear student If there is noexternal torque acting on the system, then its total angular momentum…

Q: particle of mass 0.300 kg is attached to the 100-cm mark of a meterstick of mass 0.150 kg. The…

A: a) The angular momentum of the system is,…

Q: A rod of length L and mass m is sliding with one end on the horizontal surface and the other end on…

A: Given Length of rod L = 3 m Mass of rod m = 1 kg velocity of rod at end A and end B  v = 2 m/s

Q: A disk of mass M is spinning freely at 6.73 rad/s when a second identical disk, initially not…

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Q: How could you use simple equipment such as balls and string to study the changes in angular momentum…

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Q: A diver comes off a board with arms straight up and legs straight down, giving her a moment of…

A: Given data: Initial moment of inertia I1 = 18 kg.m2 Final moment of inertia I2 = 3.6 kg.m2 Time…

Q: a 8.19 g bullet is fired into a 0.135 kg block attached to the end of a 0.673 m nonuniform rod of…

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Q: A uniform, 4.0-kg, square, solid wooden gate 1.5 m on each side hangs vertically from a frictionless…

A: Mass of the wooden gate is M = 4.0 kg Length of the gate is L = 1.5 m Mass of raven is m = 1.1 kg…

Q: Shown in the figure is a 258-kg homogeneous cylinder that rolls without slipping on the horizontal…

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Q: If is spinning a disk around its center at 5-rev/s and Lilah places a nonrotating rod (same mass as…

A: Let the mass of disk = Let the mass of rod = M Let the radius of disk = R diameter of disk = length…

Q: A playgorund carousel is free to rotate about its center on frictionless bearings, and air…

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: A phonograph turntable has a moment of inertia of 2.5 10-2 kg-m2 and spins freely on a frictionless…

A: Given : Moment of Inertia of the turn table, I = 2.5x10-2 kg-m2 Initial angular velocity, ωi = 33.3…

Q: A particle of mass 0.350 kg is attached to the 100-cm mark of a meter stick of mass 0.200 kg. The…

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Q: A 0.00500-kg bullet traveling horizontally with a speed of 1.00x10^3 m/s enters an 18.0-kg door,…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: A disk of mass M is spinning freely at 9.11 rad/s when a second identical disk, initially not…

A: Given data: Angular velocity, ω=9.11 rad/s

Q: Chapter 11, Problem 041 GO The figure shows a rigid structure consisting of a circular hoop of…

A: Given that, The period of rotation of the hoop, t = 1.4 s R = 0.2 m and m = 4.1 kg We need to find…

Q: Two particles of mass m, - 2.06 kg and m, - 5.02 kg are joined by a uniform massless rod of length…

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Q: Two disks are mounted on frictionless bearings on a common shaft. Disc 1 has rotational inertia I,…

A: Rotational inertia of disc 1 is I1  Angular velocity of disc 1 is ω1 Rotational inertia of disc 2 is…

Q: The 350-kg flywheel of a small hoisting engine has a radius of gyration of 600 mm. If the power is…

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Q: A baseball player swings his bat with his arms fully extended. If his arms are pulled in closer to…

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Q: The figure shows a rigid structure consisting of a circular hoop of radius R and mass m, and a…

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Q: A disk of mass M is spinning freely at 7.69 rad/s when a second identical disk, initially not…

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Q: At what angular speed does the door swing open immediately after the collision? Calculate the total…

A: To determine,At what angular speedω does the door swing open immediately after the…

Q: A mobile sculpture is suspended from the ceiling of an airport terminal building. It consists of two…

A: Write the given values of this problem. m=2 kgmass of uniform metal rod=3 kgS=4 mN=3 revolution/min

Q: (d) At what angular speed (in rad/s) does the door swing open immediately after the collision? rad/s…

A: Given: Mass of the bullet m = 0.004 kg. The speed of bullet u = 1000 m/s. Mass of door M = 16.6 kg.

Q: A playgorund carousel is free to rotate about its center on frictionless bearings, and air…

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Q: In the figure, a 6.04 g bullet is fired into a 0.604 kg block attached to the end of a 0.904 m…

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Q: A light rigid rod 1.00 m in length rotates about an axis perpendicular to its length and through its…

A: The length of the rod, l = 1 m Mass of first particle, m1 = 4 kg Mass of second particle, m2 = 3kg…

Q: In the figure, a 8.56 g bullet is fired into a 0.258 kg block attached to the end of a 0.709 m…

A: Given that the mass of bullet m = 8.56g…

Q: A solid cylinder of mass 4 kg and radius 2 m rotates with constant angular velocity of 5 rad/s about…

A: Given: mass of cylinder, m = 4 kg radius, R = 2 m angular velocity, ω = 5 rad/s

Q: The figure below shows a rigid structure consisting of a circular hoop of radius R and mass m, and a…

A: Given: T=6.6 s R=0.60 m m=6.0 kg

Q: A circular plate with I = 0.052 kg m² is rotating at w; = 1.2 rad/s. Another circular plate with I2…

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Q: A disk of mass M is spinning freely at 9.27 rad/s when a second identical disk, initially not…

A: (a) There is no external torque acting on the system. According to the principle, total angular…

Q: AA point mass (m) is undergoing uniform circular motion with an angular speed (@) in a horizontal…

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Q: The figure shows a rigid structure consisting of a circular hoop of radius R and mass m, and a…

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Q: A subway train consisting of 3 cars moves on a straight track with a velocity of 1.1 meters per…

A: since you have asked multiple question we will solve first question for you please post remaining…

Q: If the skater has the same angular momentum during the following spin positions, what is the correct…

A: The concept above is of Conservation of Angular momentum Conservation of Angular momentum This state…

Q: A buzzard (m = 9.50 kg) is flying in circular motion with a speed of 8.14 m/s while viewing its meal…

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Q: A 0.00600 kg bullet traveling horizontally with speed 1.00 x 10° m/s strikes a 15.1 kg door,…

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Q: Diving from a high cliff, Cliff begins with a moderate rotational speed of a half rotation per…

A: The rotational speed and the moment of inertia is given for different instants of time for a diver.…

Torque

Torque is the rotational equivalent of linear force in physics and mechanics. Based on the course of study, it is also known as the moment of force, rotational force, or turning effect.