small wind turbine has three 4.6-m-long blades, each with a mass of 45 kg. When the blades spin at 240 rpm, what is the kinetic energy of the blade assembly? (You can treat the blades as uniform rods.)

Q: A disk with a mass of "m" kg and radius of "r" meters (l =1/2mr^2) rolls without slipping at "v"…

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Q: A solid sphere of weight 35.5 N rolls up an incline with an inclination angle of 35.0°. At the…

A: weight , W = 35.5 N Mass = W/g = 3.6 kg Angle of inclination , θ = 35° Speed , v = 5.1 m/s To find =…

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Q: An automobile traveling at 8.33 m/s has tires of 0.950 m diameter. Include all work and equations…

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Q: What is the angular momentum of each hand of a clock? Treat the hands like a thin rod with axis of…

A: length of minute hand = 25 cm = 0.25 m mass of minute hand = 46 g Length of hour hand = 15 cm = 0.15…

Q: A steam fan in a thermal power plant has a moment of inertia of 3 kg ∙ m2 about its axis of…

A: Given data: Moment of inertia, I=3 kg.m2 Angular frequency, ω=3600 s-1 Time, t=3 s

Q: A wheel is rolling along the ground with a translational velocity of 2.0m/s. If the wheel has a…

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Q: A uniform block of granite in the shape of a book has face dimensions of 20 cm and 15 cm and a…

A: Given: Find rotational kinetic energy about that axis. Now,

Q: A 2.00 kg solid disk of 20.0 cm diameter is rotating at 200.0 rpm. A 1.00 kg narrow circular loop of…

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Q: Velomobile Characteristics Mass: 29 kg in addition to the rider Aerodynamic drag: F, = 0.0492 V*…

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Q: A slender metal rod has a mass M and length L. The rod is first rotated about a perpendicular axis…

A: Given, aslender metal rod has a mass M and length L. The rod is first rotated about a perpendicular…

Q: A sphere of radius r starts from rest and rolls without slipping along a curved surface, dropping…

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Q: A 20.0 kg hollow cylinder (I = MR2) has a diameter of 50.0 cm. The cylinder is rolling down a hill…

A: if the object is rolling then the relation b/w its angular velocity (ø) and linear velocity (v) is…

Q: A horizontal 800-N merry-go-round is a solid disk of radius 1.50 m and is started from rest by a…

A: The expression for the moment of inertia is, I=12MR2=12WgR2   Substitute, I=12800 N9.8 m/s21.50…

Q: What will happen if an ice skater spinning on one of her toes extends her arms? a. Her moment of…

A: Expression for angular velocity -  ω=vr .....(1) Expression for moment of inertia -  L=Iω .....(2)…

Q: Which of the following statements is TRUE? a. Rotational kinetic energy is not affected by the…

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Q: A 5 kg ball with a 0.4 meter radius is rolling on a horizontal surface at 3 m/s. The rotational…

A: This question is based on law of conservation of energy and pure rolling motion.

Q: A machine part rotates at an angular speed of 0.09 rad/s; its speed is then increased to 2.8 rad/s…

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Q: A 2.3 kg bowling ball (solid sphere) is rolling down the alley at 4.5 m/s while spinning at 30.0…

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Q: A 2.00 kg solid disk of 20.0 cm diameter is rotating at 200.0 rpm. A 1.00 kg narrow circular loop of…

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Q: A barbell consists of two small balls, each with mass 400 grams (0.4 kg), at the ends of a very low…

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Q: A horizontal 800-N merry-go-round is a solid disk of radius 1.50 m and is started from rest by a…

A: Use rotational Kinetic energy. for solid disc , moment of inertia is mr²/2  Torque = momentum of…

Q: Calculate the angular momentum of the person in the Problem 1. Problem 1 Calculate the force of…

A: The expression for the angular momentum is,

Q: To drive a typical car at 40 mph on a level road for one hour requires about 3.2 × 10^7 J of energy.…

A: We have a wheel of mass m=450 kg and diameter d=1.26 m which is spinning with a angular velocity say…

Q: A spinning disk with a mass of 12 kg and a radius of 2 m has an angular velocity of 3 rad/s. What is…

A: Solution:          Rotational kinetic energy of a disc            K.∈=12I ω2…

Q: A top has a moment of inertia of 4.8 kg-m2.  The top is spinning at 35 rpm.  How much rotational…

A: rotational kinetic energy= 64.30 joules

Q: A solid metal bar is at rest on a horizontal frictionless surface. It is free to rotate about a…

A: Torque = r×F It is the cross product of position and force.  Also, torque = moment of inertia ×…

Q: A disk is rotating about a vertical axis of rotation with an initial angular velocity. There are two…

A: According to the relation between linear velocity and angular velocity, we have,  v = r ω ω = vr…

Q: Three point masses ma, mB and mc are located in the x-y plane at points A, B and C as shown in…

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Q: A 1 kg phonograph turntable has a diameter of 34 cm. What is its kinetic energy when it rotates at…

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Q: A 34.0 kg wheel, essentially a thin hoop with radius 1.20 m, is rotating at 240 rpm. It must be…

A: Write the given values with suitable variables. m=34 kgr=1.2 mNi=240 rpmNf=0t=18 s Here, m, r, Ni,…

Q: Consider a 50.0 kg merry go round with a radius of 1.50 rotating at 20.0 rpm with an 18.0 kg child…

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Q: A spinning figure skater has a moment of inertia of 1.00 kgm with her arms tucked close to her body…

A: Given data: Moment of inertia when arms tucked close to body (I1) = 1.00 kgm2 Moment of inertia when…

Q: (a) Without the wheels, a bicycle frame has a mass of 7.77 kg. Each of the wheels can be roughly…

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Q: A bowler uses a lane with a coefficient of kinetic friction of 0.156.0.156. The bowler releases her…

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Q: We can use rotating cylinder to store energy in space. Let a 10-meter-long cylinder with diameter…

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Q: A typical helicopter with four blades rotates at 240 rpm and has a kinetic energy of 3.45 105 J.…

A: The kinetic energy, KE=3.45×105 J   The angular speed, ω=240 rpm×2π rad1 rev×1 min60 s=25.13 rad/s

Q: a wheel of radius 0.20 m is mounted on a frictionless horizontal axis. The rotational inertia of the…

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Q: An ice skater, whose rotational inertia is I = 4 kg·m2 with her arms close to her body, is spinning…

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Q: A 750 g disk and a 760 g ring, both 15 cm in diameter, are rolling along a horizontal surface at 1.3…

A: a)From conservation of energy, the expression for the required distance is,

Q: A slender metal rod has a mass MM and length LL. The rod is first rotated about a perpendicular axis…

A:

Q: 5 kg ball with a 0.4 meter radius is rolling on a horizontal surface at 3 m/s. The rotational…

A: m= 5 kg r= 0.4 m v= 3 m/s maximum height achieved= H inertia= I

Q: A ring and disc are both rolling without slipping so that both have a kinetic energy of 144. What is…

A: Given:  The kinetic energy of the ring and disc is ERing=Edisc=144 J. The total kinetic energy of…

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.