Gyroscopes used in guidance systems to indicate directions in space must have an angular momentum that does not change in direction. Yet they are often subjected to large forces and accelerations. How can the direction of their angular momentum be constant when they are accelerated?

Q: Suppose a child walks from the outer edge of a rotating merry-go-round inside, does the angular…

A: The angular velocity of the merry-go-round will increase Reason initially when the child is at outer…

Q: A horizontal platform in the shape of a circular disk rotates on a frictionless bearing about a…

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Q: A horizontal platform in the shape of a circular disk rotates on a frictionless bearing about a…

A: Given Information:- Radius of the horizontal platform is R=3.56 m Moment of inertia of the circular…

Q: A spherical boulder of mass 16.0 kg and radius 16.0 cm rolls down a hill 17.0 m high from rest. What…

A: The mass of the spherical boulder is m = 16.0 kg. The radius of the spherical boulder is r = 16.0 cm…

Q: Two uniform thin identical rods each of mass 15 g and length 30 cm are joined so as to form a cross…

A: Given data Mass of the rods, m=15 g=0.015 kg Length, L=30 cm=0.3 m Angular velocity of the center of…

Q: round merry-go-round has a mass of 120 kg and a radius of 1.80 m and it is rotating with an angular…

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Q: If the radius of an object moving in a circle is doubled, what happens to the objects angular…

A: Expression for angular momentum -  L=mvrWhere, L =Angular momentum v = Velocity r = Radius

Q: A man is spinning on a platform while holding weights in his outstretched arms. Suppose he pulls the…

A: We will only answer the first question since the exact question to be answered was not specified.…

Q: In a high school swim competition, a student takes 1.4s to complete 4.0 somersaults. Determine the…

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Q: How much time to achieve angular velocity of 35.9 rad/s and how many revolution does the blade turn…

A: (a) Given : initial angular velocity ωi = 0            final angular velocity, ωf = 35.9 rad/s…

Q: A horizontal platform in the shape of a circular disk rotates on a frictionless bearing about a…

A:

Q: A horizontal platform in the shape of a circular disk rotates on a frictionless bearing about a…

A:

Q: A playground merry-go-round has a mass of 120 kg and a radius of 1.80 m and it is rotating with an…

A: It is given that,

Q: A horizontal platform in the shape of a circular disk rotates on a frictionless bearing about a…

A:

Q: A standard LP record has a radius of 16 cm and a mass of 162 g. For an LP rotating at 32 rpm, what…

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Q: In the caber toss, a contest of strength and skill that is part of Scottish games, contestants toss…

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Q: Small 358 g ball on the end of a thin light rod is rotated in Horizonte circle of radius 1.24m a)…

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Q: A ring accelerates from from2rad/s. The angular acceleration of the wheel is 5.0 rad/s. What is the…

A: initial angular velocity = 2 rad/s  angular acceleration = 5 rad/s2 time = 9 s

Q: A 5-kg ball is tied to the end of a string. The ball is then swung at a constant angular velocity of…

A: Torque is defined as the rate of change of angular momentum.

Q: A horizontal platform in the shape of a circular disk rotates on a frictionless bearing about a…

A: Given data: The radius of platform is r=1.51 m. The rotational inertia of platform is I=479 kgm2.…

Q: slipping on a flat surface as shown below. Starting from rest, the wheels move at an

A: Apply no condition of slipping for point of contact

Q: What is the final angular speed of

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Q: ne distante i aveleu vy the Dike.[14.9 M] Given that the bicycles' wheels are 76 cm in diameter. 11)…

A: Step 1The given quantities are

Q: If the net torque is zero, this implies that () the angular momentum is constant or conserved () the…

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Q: A horizontal platform in the shape of a circular disk rotates on a frictionless bearing about a…

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Q: A horizontal platform in the shape of a circular disk rotates on a frictionless bearing about a…

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Q: James and Clare are riding their bicycles. They are riding at the same speed, but the tires on…

A: Rotational inertia also called the Moment of Inertia is the opposition to the rotation of the body.…

Q: In a stunt that his friends say is crazy, a physics student jumps off a high diving platform and…

A: Number of revolutions (n) = 1.5height of platform above the swimming pool (h) = 12 m

Q: A torque of magnitude 50N m acts for 3 seconds to start a small airplane propeller (I = }mr²) of…

A: Write the expression or the torque and substitute the required values to determine the angular…

Q: Suppose an ice skater has moment of inertia of 8 kg m^2 while spinning with arms wide open and 6 kg…

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Q: A horizontal platform in the shape of a circular disk rotates on a frictionless bearing about a…

A: radius = r = 4.96 m rotational inertia of platform = I = 268 kg-m2 mass of student = 53.1 kg

Q: A person walks into a room and switches on the ceiling fan. Thefan accelerates with constant angular…

A: Given data The time taken to accelerate the fan is: t1 = 15 s The operating angular speed of the fan…

Q: A horizontal platform in the shape of a circular disk rotates on a frictionless bearing about a…

A: Given : R = 4.62 m I = 101 kg.m2 m = 66.8 kg ωi = 2.10 rad/s r = 0.592 m

Q: A hollow, iron sphere has a radius R = 0.8 m and mass M = 8 kg. IT rotates at a constant àngular…

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Q: What is the difference between the angular velocity of a second hand of a wrist watch compared to…

A: Calculation: The second hand of a clock completes a full rotation in 60 s, the angular velocity of…

Q: Question 5 A figure skater spins with her arms outstretched. If she then brings her arms in…

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Q: A horizontal platform in the shape of a circular disk rotates on a frictionless bearing about a…

A: Given Radius r=4.46m Inertia of disk I=289kgm2 Mass of student m=56.1 kg Initial angular speed…

Q: A 58 kg child is riding on the outer rim of a merry-go-round. The merry-go-round has a radius of 2.2…

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Q: Just after a motorcycle rides off the end of a ramp and launches into the air, its engine is turning…

A: Given information: The initial angular velocity of the engine, ωEi=7800 rev/min The final angular…

Q: Suppose you are sitting on a rotating stool holding a 2-kgmass in each outstretched hand. If you…

A: Before holding the masses, our body has a some angular momentum. Angular momentum is nothing but…

Q: When a diver first leaves the diving platform their body is stretched out. When they tuck, what…

A: We have to answer the following: When a diver first leaves the diving platform their body is…

Q: Big Ben, the Parliament tower clock in London, has hour and minute hands with lengths of 2.70 m and…

A: Let LH and LM, and MH and MM denote the given lengths and masses of the Big Ben’s hour and minute…

Q: A 6:0-kg particle moves to the right at 4:0 m=s as shown. The magnitude of its angular momentum…

A: The angular momentum about point O is given as