A wind turbine rotates at 21 rev/min. If its power output is 6.0 MW, what is the torque produced on the turbine from the wind (in N · m)? (Assume the torque is constant.)

Q: A merry-go-round has a mass of 1460 kg and a radius of 7.60 m. How much net work is required to…

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Q: An electric motor starts from rest and reaches its normal rotational speed of 1,740 rpm in 1.0 s,…

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Q: A 34 cm diameter circular saw blade has a mass of 0.95 kg, distributed uniformly as in a disk. What…

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Q: through aive beit that Joins a pulley on pulley that is igidly 48.5 kg and a radius R = 0.625 m. It…

A: Moment of inertia of the flywheel will be, I=12mR2 The expression for torque will be, τ=Iατ=12MR2α

Q: A golf ball is launched at an angle of 20 to the horizontal, with a speed of 60 m/s and a rotation…

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Q: A merry-go-round has a mass of 1440 kgkg and a radius of 7.70 mm . A.How much net work is required…

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Q: A 2.5 HP motor operates at 1200 RPM.  How many ft-lbs of torque does it provide at that speed?

A: The power is given by, P=τω Here, τ is the torque and ω is the angular speed. Rearranging the…

Q: It is known that an aluminum bar breaks when it is subjected to a traction of 25Kn. One end of the…

A: Consider that the tension in the aluminum road provides the centripetal force for the circular…

Q: A circular saw is powered by a motor. When the saw is used to cut wood, the wood exerts a torque of…

A: Given data: Torque (τ) = 0.4 N.m Constant angular velocity (ω) = 19 rad/s Time (t) = 6.1 min…

Q: A potter's wheel, with rotational inertia 42 kg⋅m2, is spinning freely at 40.0 rpm. The potter drops…

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Q: Find the torque about the origin when a force of 3j N acts on a particle whose position vector is 2k…

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Q: If the turbine of the engine spins at an angular velocity of 217.011 radians per sec, what is the…

A: Given data :Angular velocity is ω =217.011 rad/sec

Q: A merry-go-round has a mass of 1480 kg and a radius of 7.00 m . How much net work is required to…

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Q: A circular saw is powered by a motor. When the saw is used to cut wood, the wood exerts a torque of…

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Q: The centrifuge rotor has a moment of inertia of 3.75 x 10 ^ -2 kg m2. How much energy is required to…

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Q: nuscles in the back of the upper leg. The weight has mass 12.5 of inertia of the lower leg is 0.900…

A: Given:- The mass of the lifted weight is m = 12.5  kg  the distance r = 28 cm = 0.28 m  The moment…

Q: 9.37 The flywheel of a gasoline engine is required to give up 540 JJ of kinetic energy while its…

A: Given data *The given kinetic energy is ∆k=-540 J *The initial angular velocity is ωi=640…

Q: A grinding wheel is spinning counterclockwise at a rate of 168 rad's When the power to the grinder…

A: The expression for the required time is, ω=αtt=ωα

Q: A propeller is modeled as five identical uniform rods extending radially from its axis. The length…

A: Given: The mass (M) of each rod is 2.91 Kg. The length (L) of each rod is 0.757 m. The propellor is…

Q: A rotating uniform cylindrical platform of mass 220 kg and radius 5.5 m slows down from 3.8 rev/s to…

A: Given  Mass m = 220 kg  Radius r = 5.5 m  Moment of inertia I = (1/2) mr2  = (1/2) × 220 × (5.5)2 =…

Q: A merry-go-round has a mass of 1480 kgkg and a radius of 7.40 m. How much net work is required to…

A: Given information: Here, m is the mass of the merry-go-round, r is its radius, ωi and ωf are the…

Q: A shaft 15 cm in diameter is to be turned on a lathe with a surface linear speed of 180 m/min . What…

A: Diameter, D = 15 cm  Linear speed, v = 180 m/min = 3 m/s

Q: Force F = -4.4 Ni+ 6.4 N j acts on a small rock with a position vector r = 3.1 m i+ 8.5 m j relative…

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Q: A 250 g , 21-cm-diameter plastic disk is spun on an axle through its center by an electric motor.…

A: Given that:- Mass of disc=m=250gm

Q: hilé exercising in a fitness center, a man lies face down on a bench and lifts a weight with one…

A: Given that: m=10.5 kgd1=28.0 cm=0.280 mF=1430 Nd2=3.45 cm=0.0345 mIL=0.900 kgm2

Q: Find the rotational inertia of the following masses with respect to the x-axis: m1=1.0,…

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Q: What is the magnitude of the torque about the origin of the orce (-3i+3j+5k) N if it is applied at…

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Q: If the turbine of the engine spins at an angular velocity of 235.47 radians per sec, what is the…

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Q: A propeller is modeled as five identical uniform rods extending radially from its axis. The length…

A: Given that: L=0.875 mm=2.71 kgω=519 rpm=519 rpm×2π rev/min60 rpm=54.35 rad/s Here, L, m, and ω are…

Q: What is the power output in horsepower of an electric motor turning at 4600 rev/min and developing a…

A: The driving of electric motor is known as torque. The torque acts as a twisting force that makes the…

Q: An engine produces a net torque of 20 N-m. If it rotates at 110 rpm what is the rotational power of…

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Q: Calculate the rotational inertia of a wheel that has a kinetic energy of 14.8 kJ when rotating at…

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Q: A propeller is modeled as five identical uniform rods extending radially from its axis. The length…

A: Length ( L ) = 0.745 m Mass ( m ) = 2.59 kg Moment of Inertia ( I ) = m.L23 Substituting the values…

Q: A circular saw is powered by a motor.  When the saw is used to cut wood, the wood exerts a torque of…

A: Given data:  Torque (τ) = 0.7 N.m Constant angular velocity (ω) = 23 rad/s Time (t) = 7.3 min…

Q: A merry-go-round has a mass of 1450 kgkg and a radius of 7.50 mm . How much net work is required to…

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Q: A wheel with rotational inertia 46 kg.m2 is mounted on a fixed, frictionless axle. The angular speed…

A: The expression for the average power is,

Q: Question 1 (1.1) An object with a mass of 50kg is forced to move over 20m, the work done is…

A: 1.1)mass of object (M) = 50 kg distance (d)= 20 m Work done (W)= 500 Nm

Q: A 240-N sphere 0.20 m in radius rolls without slipping 6.0 mdown a ramp that is inclined at 37° with…

A: Initially, the translational and rotational kinetic energies are zero. At the bottom of the slope,…

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

A: Given: The mass (m) of the ball is 5 Kg. The radius (r) of the ball is 0.4 m. The linear velocity…

Q: A 34.0 kg wheel, essentially a thin hoop with radius 1.50 m, is rotating at 250 rev/min. It must be…

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Q: Energy is to be stored in a 50 kg flywheel in the shape of a uniform solid disk with a radius 1.20m.…

A: Given data: Mass (M) = 50 kg Radius (R) = 1.20 m Radial acceleration (aR) = 3500 m/s2 Required: The…

Q: A 230 gg , 20-cm-diameter plastic disk is spun on an axle through its center by an electric motor.…

A: Angular acceleration of the disk is

Q: A thread is wrapped around a cylindrical spool, of radius R = 2.0 cm, whose centralaxis is fixed on…

A: Given, Radius, r= 2 cm or 0.02 m Length of thread, l = 5 m Let constant acceleration be a  m/s2 .…

Q: A 40.0-kg solid cylinder is rolling across a horizontal surface at a speed of 6.0 m/s. How much work…

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Q: the knee extensors insert on the tibia at an angle of 30 degrees (from the longitudinal axis of the…

A: Given an object of mass m, an effective radius r can be defined for an axis through its center of…

Q: What will be the corresponding applied torque if the power output given by an engine rotor is equal…

A: given data, Power of the motor , P = 500 watts angular speed , ω = 3300 rad/s Let , the torque be τ

Q: A basketball is spun with a beginning rotational speed of 12.5 rad/s and stops in 5.0 s. Find the…

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