In terms of rotational inertia, explain why: Short-legged people step more quickly than long-legged people do.

Q: A gyroscope slows from an initial rate of 34.4 rad/s at an angular acceleration of 0.74 rad/s2. How…

A: An initial angular speed of a gyroscope,Final angular speed of a gyroscope,An angular acceleration,

Q: What is the new rotational energy of the system? answer have to be in kJ How much chemical…

A: The magnitude of the angular momentum of the system can be given by,     Li=m1v1r1i+m2v2r2i=2mv(d2)⇒…

Q: In the figure, a wheel of radius 0.390 m is mounted on a frictionless horizontal axle. Amassless…

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Q: A merry-go-round spinning at 0.8 rad/s has a radius of 3 m. Its rotational inertia is 600 kg m2. A…

A:

Q: The moment of inertia of a body about a given axis is 1.2kgm2. Initially, the body at rest. In order…

A: C

Q: A potter's wheel, with rotational inertia 46 kg · m2, is spinning freely at 40 rpm. The potter drops…

A:

Q: A stone potter's wheel with rotational moment of inertia 2.4 kg m2 is initially at rest. A motor is…

A: Torque applied on the wheel is given by: torque = I*alpha alpha = angular acceleration = torque/I…

Q: A regulation table tennis ball has a mass of 2.7 g and is 40 mm in diameter.  What is its rotational…

A: The expression of rotational inertia of the tennis ball is:I=23mr2Given data:d=40 mmr=d2=402=20…

Q: The angular speed of a rotor in a centrifuge increases from 429 to 1350 rad/s in a time of 6.77 s.…

A:

Q: During a steady right turn, a person exerts the forces shown on the steering wheel. Note that each…

A: Given,

Q: A merry-go-around with moment of inertia of I and radius of R rotates with angular speed of w0.  A…

A: The initial angular momentum of the merry-go-round can be given as, Li=I.ω0 When a metal block is…

Q: A 4.50-kg centrifuge takes 200 s to spin up from rest to its final angular speed with constant…

A: Angular velocity is defined as the rate of change of angular displacement with time. Angular…

Q: The angular speed of a rotating disk is given by the equation. = (2rad/s) + (3radts2)t What is the…

A:

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

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Q: To stretch pizza dough into a perfect shape a chef throws the dough spinning around its symmetry…

A:

Q: How can Newtons second law be adapted to explain the motion of rotating objects? (b). How do we…

A: Newton's second law can be adapted to explain the motion of rotating objects by introducing concepts…

Q: A skater is spinning about a fixed symmetrical vertical axis. When she lifts her arms above her…

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Q: In terms of rotational inertia, explain why: It's hard to walk without bending your knees.

A:

Q: A bar is acted upon by equal magnitude forces at different points along its length. The center of…

A: None of these

Q: The angular position of a point on the rim of a rotating wheel is given by e = 1.70t - 1.71t + 2.77,…

A:

Q: drum major twirls a 95-cm-long, 440 g baton about its center of mass at 140 rpm. What is the baton's…

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Q: The figure gives the speed v versus time t for a 0.739 kg object of radius 2.12 cm that rolls…

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Q: Three identical balls, with masses of M, 2M, and 3M, are fastened to a massless rod of length L as…

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Q: *16. Go An automatic dryer spins wet clothes at an angular speed of 5.2 rad/s. Starting from rest,…

A: Given information: The final angular speed, ωf=5.2 rad/s The initial angular speed, ωi=0 The average…

Q: The planet Earth orbits around the Sun and also spins around its own axis. Calculate the angular…

A: Calculated values:Mass of the earth, M = 5.97 x 1024 kgRadius of the earth, R = 1.496 x 1011…

Q: Ex. 6: The moment of inertia of the earth about its axis of rotation is 9.83 x 1097 kg-m2 and if its…

A: To find-(1) K.E. of rotation.(2) Radius of gyrationGiven-For earth,Moment of inertia=I=9.83×1037…

Q: Cyclist! A cyclist starts from rest and pedals such that the wheels of his bike have a constant…

A: Given: The initial angular speed of the cyclist is 0 m/s. The number of revolutions after 14 s is 48…

Q: A person sits in a chair that is free to rotate without friction. In their hands, they hold two…

A:

Q: The angular velocity vs. time for a fan on a hovercraft is shown below. Find the angle through which…

A:

Q: The masses and coordinates of four particles are Indicated in the following table. 50 gx = -1.0 cm…

A: Part-a Given: The masses and the positions are given in the question.

Q: A pitcher throws a curveball that reaches the catcher in 0.64 s. The ball curves because it is…

A: Given data: The time is t=0.64 s The angular velocity is ω=260 rev/min

Q: Rev/min 400 300 200 100 0 0 1 2 3 4 5 Time (s) T T 6 7 8 The angular velocity versus time for a fan…

A: To determine the number of revolutions in the first 7.38 seconds, we need to find the area under the…

Q: The angular velocity vs. time for a fan on a hovercraft is shown below. (a) What is the angle…

A: (a) The area under the angular velocity vs time graph represents the angular displacement. The area…

Q: When a fan is turned off, its angular speed decreases from 10 rad/s to 6.3 rad/s in ?5.0s. What is…

A: Given: The initial angular speed of the fan is 10 rad/s.            The final angular speed of the…