A 30-cm-diameter, 1.6 kg solid turntable rotates on a 1.6-cm-diameter, 450 g shaft at a constant 33 rpm. When you hit the stop switch, a brake pad presses against the shaft and brings the turntable to a halt in 15 seconds.  How much friction force does the brake pad apply to the shaft?

Q: A skater starts a spin at 1.5 rps (rotation per second), her initial moment of inertia is 2.6 Kgm².…

A: Given, initial angular velocity of the skater, ωi = 1.5 rps initial angular moment of inertia of…

Q: A 85.6 g drink is left on a turntable causing it to turn with an angular speed of 8.20 rad/s. If the…

A: Normal reaction acting on the drink is:

Q: An 7.00-cm-diameter, 370 g hollow sphere is released from rest at the top of a 1.90-m-long, 20.0*…

A:

Q: A 0.30-m-radius automobile tire rotates how many rad after starting from rest and accelerating at a…

A:

Q: A toy top with a spool of diameter 5.0 cm has a moment of inertia of 3.0x10-5 kg ⋅ m2 about its…

A: Given Data: The diameter of a toy top is, d=5.0 cm The moment of inertia is, I=3×10-5 kgm2 The force…

Q: A 50-N · m torque acts on a wheel with a moment of inertia 150 kg · m². If the wheel starts from…

A:

Q: Solve for the angular speed of a car while taking a circular turn of radius 100 m at 36km/hour. a.…

A:

Q: A machine part rotates at an angular speed of 0.066 rad/s; its speed is then increased to 2.3 rad/s…

A: (a) The kinematic equation ωf2=ωI2+2α∆θrearrange∆θ=ωf2-ωI22α

Q: A 64-cm-diameter wheel accelerates uniformly about its center from 130 rpm to 300 rpm rpm in 4.8 s.…

A: Given data: Diameter of wheel is, d=64 cm=0.64 m. Number of revolution at initial is, N1=130 rpm.…

Q: What is the magnitude of torque that would need to be applied to stop the motion of a 10-kg ball…

A: Calculate the change in angular momentum. ΔL= I(ωi - ωf)     = (10*102)(5 - 0)    = 5000 kgm2s-1

Q: A 51.0 g drink is left on a turntable causing it to turn with an angular speed of 7.10 rad/s. If the…

A: Given:Mass of drink = 51.0 gAngular speed = 7.10 rad/sCoefficient of static friction, μs =…

Q: A 66-N · m torque acts on a wheel with a moment of inertia 175 kg · m². If the wheel starts from…

A: The torque =66N  The moment of inertia =175kg

Q: A cylinder of radius 2.59 cm2.59 cm and a sphere of radius 9.22 cm9.22 cm are rolling without…

A:

Q: A 0.13 m radius grinding wheel takes 1.3 s to speed up from 2.9 rad/s to 7.2 rad/s. What is the…

A:

Q: In a lab experiment, a student brings up the angular speed of a flywheel to 50 rpm.  She then allows…

A: Given: Initial angular speed of flywheel, ωi = 50 rpm Final angular speed, ωf = 0 Total number of…

Q: A wind turbine has a moment of inertia of 2.8*10^11 kg*m^2 . How much energy is required to speed it…

A:

Q: Att 0, a wheel rotating about a fixed axis at a constant angular acceleration has an angular…

A: Write the expression for angular displacement.

Q: A car of mass 7,772 kg moves with a speed of 27 m/s on a circular track with a diameter of 797 m.…

A:

Q: A 4.54 kg, 33.8 cm radius fly-wheel is initially spinning at a speed of 754 rpm. How much torque…

A:

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: Flywheels are solid, uniform disks that spin around an axis running through their center of mass and…

A: Write the expression for the kinetic energy of rotation. Here, E represents the energy, R…

Q: A typical helicopter with four blades rotates at 290 rpm and has a kinetic energy of 5.85 x 105 J.…

A:

Q: A figure skater is initially spinning with his arms and one leg outstretched at 50 rpm. By slowly…

A: The expression from angular kinematics,

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: The angular acceleration of a spinning toy is a = 5t3 – 4t. If at t = 0, the angular %3D velocity is…

A: Given: The equation of angular acceleration is α=5t3-4t. The angular velocity at t=0 is 5 rad/s.

Q: A 16-kg block is attached to a cord that is wrapped around the rim of a flywheel of diameter 0.40 m…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: a record player rotates freely at 33 1/3 rpm (which is 3.5 rad/s) and has a moment of inertia of…

A:

Q: A wheel starts from rest and has an angular acceleration that is given by a (t) = 6 rad/s4)t2. The…

A:

Q: A turntable is off and is not spinning. A 1.5 g ant is on the disc and is 10 cm away from the…

A: Soluction

Q: The blades in a blender rotate at a rate of 4.250 E+3 rpm. When the motor is turned off during…

A:

Q: A ceiling fan is turned on and reaches an angular speed of 111 rev/min in 23 s. It is then turned…

A:

Q: n a lab experiment, a student brings up the angular speed of a flywheel to 50 rpm. She then allows…

A: Equation of motion in rotational mechanics can be expressed as ωf2-ωi2=2αθ

Q: A 0.29 m radius grinding wheel takes 7.7 s to speed up from 2.7 rad/s to 8.9 rad/s. What is the…

A: Given data: Radius (r) = 0.29 m Initial angular velocity (ω0) = 2.7 rad/s Final angular velocity (ω)…

Q: A large turntable rotates about a fixed vertical axis (Iturntable=1200 kg/m2) making 1 revolution…

A: Moment of inertia of turntable = 1200 kg m2time taken for 1 revolution = 6 seconds mass of student =…

Q: A compact disc in a turntable rotates through 6.0 rad in 4.4 s as it is accelerated uniformly from…

A: Given data The initial velocity of the compact disk is ω0=0. The time duration is given as t = 4.4…

Q: The dung beetle is known as one of the strongest animals for its size, often forming balls of dung…

A: Given data The radius of the dung ball is r = 1.80 cm = 0.018 m The speed of the dung ball is v =…

Q: Ice skaters can increase the angular speed of their spins by pulling their arms towards their body.…

A:

Q: A circular pulley of radius 0.35 [m] can rotate on frictionless bearing. A massless string passes…

A:

Q: A 2.2 kg , 20-cm-diameter turntable rotates at 150 rpm on frictionless bearings. Two 470 g blocks…

A:

Q: The power required to rotate an object and overcome friction is P = –bw, where w is the angular…

A:

Q: A hollow spherical shell of radius R that is rotating about an axis through its center has…

A: Expression for kinetic energy -  EK=12Iω2 Where,  I=Moment of inertia of hollow sphericalI=23MR2ω2…

Q: A 500-g wheel that has a moment of inertia of 0.015 kg · m2 is initially turning at 30 rev/s. It…

A:

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.