You're feeling particularly lazy and decide to open a door by firing a bullet at it. The door has a mass of 10.7 kg and is 1.25 m wide, and the 10 g bullet, traveling at 420. m/s, hits the door at the edge opposite the hinges. The bullet stops inside the door, which then swings open. What is the angular velocity of the door just after the bullet hits it?

Q: Three children are riding on the edge of a merry-go-round that has a mass of 105 kg and a radius of…

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Q: A bicycle with 0.80-m-diameter tires is coasting on a level road at 5.6 m/s. A small blue dot has…

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Q: A thin disk rotates about an axis that goes through its center perpendicular to its plane. The…

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Q: Three children are riding on the edge of a merry-go-round that is 105 kg, has a 1.70-m radius, and…

A: Given:Mass of the merry-go-round, M = 105 kgRadius of the merry-go-round = 1.7 mAngular velocity =…

Q: Mary and her younger brother Alex decide to ride the carousel at the State Fair. Mary sits on one of…

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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.…

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Q: A 44 kg girl is seated in the middle of a 4.6 m diameter merry-go-round. The merry-go-round disc has…

A: Given,

Q: A 210 g , 34.0-cm-diameter turntable rotates on frictionless bearings at 65.0 rpm . A 21.0 g block…

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Q: A 43 kg boy is seated at the edge of a 5.0 m diameter merry go round. The merry-go-round disc has a…

A: mass of boy, m = 43 kg  mass of disc, M = 90kg  radius, R = 2.5 m  Angular velocity, w = 18 rpm…

Q: Mary and her younger brother Alex decide to ride the 17-foot-diameter carousel at the State Fair.…

A: (a) In a uniform circular motion, angular velocity is uniform. This means equal changes in angular…

Q: Three children are riding on the edge of a merry-go-round that is 100 kg, has a 1.60-m radius, and…

A: The moment of inertia of the merry go round is The moment of inertia of the three child together…

Q: Three children are riding on the edge of a merry-goround that is 100 kg, has a 1.60-m radius, and is…

A: Given data: Mass of the marry – go – round, M=100 kg Radius, r=1.60 m Initial angular velocity,…

Q: A mountain biker takes a jump in a race and goes airborne. The mountain bike is travelling at 10.0…

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Q: A 3m diameter merry-go-round with a mass of 250kg is spinning at 20 rpm. John runs tangent to the…

A: diameter (d) = 3 m Mass of merry go round (m) = 250 kg Initial speed (u) = 5 msInitial angular speed…

Q: A 5 kg disk with a radius of 20 cm is spinning at 20 rpm. A clump of clay is dropped on the edge of…

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Q: Three children are riding on the edge of a merry-go-round that has a mass of 105 kg and a radius of…

A:

Q: Three children are riding on the edge of a merry-go-round that has a mass of 105 kg and a radius of…

A:

Q: Three children are riding on the edge of a merry-go-round that is 182 kg, has a 1.60 m radius, and…

A: The total angular momentum of the system must be conserved. It is given as

Q: nerry-go-round, what is the new angular velocity in revolutions per minute? I

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Q: A bullet of mass m=2.0g is moving horizontally with a speed of 500.0m/s. The bullet strikes and…

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Q: Mary and her younger brother Alex decide to ride the 32-foot-diameter carousel at the State Fair.…

A: (a) The angular displacement of an object in any equal interval will be the same, so the angular…

Q: Two girls (26 kg each) are standing on the edge of a solid, rotating disk of mass 70 kg and radius…

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Q: What is the new angular speed? in rad/s  She then walks to the center and stay there. What is the…

A: a) As per the conservation law of angular momentum. Here, IP, IC, ω, vC, m, and R represent the…

Q: Three children are riding on the edge of a merry-go-round that is 162 kg, has a 1.60 m radius, and…

A:

Q: (a) What is Mary's angular speed ?M and tangential speed vM? ?M =  rev/s vM =  m/s (b) What is…

A: a.  Distance of mary r1= 2.0 m  Distance of alex r2= 1.5 m Calculation of the angular speed (?) We…

Q: The linear velocity of a tetherball is 10 m/s as it moves around a circle of radius, r =2 m. What is…

A: Linear velocity is 10m/s Radius of the circle is 2m

Q: A child jumps to the edge of a carousel, that is in the shape of a circular plate with a radius of…

A: Given Waight of plate is 80 kg Radius of plate is 1.3 m Weight of boy is 22kg Concept - law of…

Q: A lawnmower blade has a length of 0.75 m and a mass of 1.5 kg. The blade rotates around its center…

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Q: A playground merry-go-round has a mass of  133kg and a radius of  1.82m and it is rotating with an…

A: Firstly moment of inertia of merry go round will be calculated as follows: I=MR2I=1331.822I=440.5492…

Q: In a playground, there is a turntable that rotates freely without friction. The turntable is a…

A: Write the expression for conservation of angular momentum

Q: Mary and her younger brother Alex decide to ride the carousel at the State Fair. Mary sits on one of…

A: GIVEN         Mary distance from the center=rm =2m         Alex distance from the center=rA =1.3m…

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.