Answer the following questions:a) Explain how skaters can quickly go from a slow to fast spin and vice versa. b) What happens to their angular velocity and moment of inertia? c) Is an external torque required? Explain

Q: An old 19th centuary iron water wheel used to turn grindstones that produced flour for the 1820…

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Q: The spinning top precesses at 1 revolution per second. The top has a mass of 400 grams and the…

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Q: What is the relationship between torque and angular momentum?

A: Standard expression for the torque (T) is given as, T=I×α ........................(1) Here, I is the…

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

A: Short leged people have smaller radius of rotation than long legged people. Short legs have less…

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A: Given: An antique car by exerting a force of 300 N on its crank for 0.250s Need to find an angular…

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A: Introduction: As in case of linear momentum, mass is multiplied by the velocity. In case of…

Q: A bowling ball with a mass of 5.0 kg and a radius of 12 cm rotates at 3.2 rev/s as it rolls down the…

A: Angular velocity of ball is as follows; ω=3.2 revsω=2π×3.2 radsω=6.4π rads Direction of angular…

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A: Conservation of angular momentum: The angular momentum of a system is conserved if there is no net…

Q: 8. The diagram below shows a merry-go-round. There are two rows of horses. The angular speed of the…

A: In merry go round since all objects moving together so angle moves by them will be same.

Q: (c) By pulling on the rope, one astronaut shortens the distance between them to 5.00 m. What is the…

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

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Q: A gymnast on a high bar swings through tro revolutions in a time of 1.90 s. Find the average angular…

A: time taken for two revolutions (t) = 1.90 seconds

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Q: 1. Show using calculus how to find the moment of inertia for a uniform rod of length Land mass M…

A: Given: The mass of the rod is M. The length of the rod is L. Introduction: The mass moment of…

Q: A spinning top is one of the oldest recognizable toys that can be found at an archaeological site,…

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Q: I don't know exactly who invented the wheel or how much research went into its development. Lets…

A: Recall     α=dω/dtSo dω=αdt      ω=∫0tαdt

Q: A bicycle with 40.20 cm diameter wheels is traveling at 11.80 km/hr. At what angular speed do the…

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Q: roblem 4: Modern wind turbines generate electricity from wind power. The large, massive blades have…

A: Moment of inertia of blade = m r2   there are three blade  moment of inertia = 3 m r2  m = 5500 kg…

Q: norizontal as shown in the Ingure below. Lhe system is released at t=U from rest. a) the…

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Q: Suppose a child walks from the outer edge of a rotating merry-go round to the inside. Does the…

A: A merry go round

Q: The equation which describe the relation between final angular velocity wf of a rotating body by…

A: Option C

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A: Angular velocity of any object in circular motion is defined as the angular displacement of object (…

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A: The angular momentum in the case of the gyroscope is used as a guidance system to indicate…

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Q: The 470 g bar is rotating as shown in the figure. What is the angular momentum of the bar about the…

A: Angular momentum is given by (L) = Moment of inertia(I) × angular velocity (w)  L  = I w  L =…

Q: What is the angular momentum of a 0.315 kg ball rotating on the end of a thin string in a circle of…

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Q: In central force motion, the angular momentum is a constant of the motion. What does this tell you…

A: We have been given that Angular momentum is constant in central force motion We need to tell about…

Q: Consider two identical disks. Would drilling a hole into the center of the first disk cause it to…

A: Moment of inertia of disc = (1/2) mr2

Q: While driving his motorcycle at highway speed, a physics student notices that pulling back lightly…

A: As the rider pulls back lightly on the right handlebar while driving the motorcycle, a torque is…

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A: Translational motion -  Motion in which object shifts from one point in space to another.…

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A: After jumping off the board your body and all of its components are in an isolated system, so the…

Q: Suppose a child walks from the outer edge of a rotating merry-go-round to the inside. Does the…

A: This is a problem where we apply the law of conservation of angular momentum. This states that in…