Why does Earth keep on spinning? What started it spinning to begin with? And how does an ice skater manage to spin faster and faster simply by pulling her arms in? Why does she not have to exert a torque to spin faster?

Q: A rotating platform is rotating with an average angular velocity of 2.5 rad s'. The radius of the…

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Q: Which is the torque having distance (meters) and mass (kg) for each of the data?

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Q: If the polar ice caps of Earth were to melt, the oceans would be deeper, what effect would this have…

A: According to the principle of conservation of angular momentum, the angular momentum of the earth…

Q: What is the earth's rotation?

A: Earth's rotation is nothing but Earths spin that means rotation of planet earth around it's own…

Q: What do Newton’s laws tell us about rotational motion?

A: The rotational form of Newton's second law states the relation between net external torque and the…

Q: Where is the centre of gravity of a uniform ring situated?

A: Centre of gravity of a body is an imaginary point which the whole mass is assumed to be…

Q: Would a torque on the moon occur if the Moon were spherical, with both its center of mass and center…

A: Write the formula for the torque (τ). Here, r is the distance from the COM (center of mass) and the…

Q: Does the rotational inertia increase or decrease as distance increases between two objects and its…

A: Write the expression for the rotational inertia.

Q: an ice skater is spinning with her arms and legs close to her body.What happens when she…

A: We will be using the concept of conservation of momentum and energy

Q: woman rides a bicycle for 11 hour and travels 20 kilometers. Find the angular velocity of the wheel…

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Q: At the foot of an eolian with blades 50 m long, you measure that it makes 7 turns in 35 seconds.   A…

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Q: Why does preceesion occur when a torque is applied on the axis of rotation of a fast rotating disc?

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Q: Calculate the Torque that a child must apply to swing a rock of mass 0.5 kg in a radius 1.16 meters.…

A: mass of rock (m) = 0.5 kg radius (R) = 1.16 m Initial velocity (u) = 0 msfinal velocity (v) = 5…

Q: In a popular amusement park ride, people stand on a circular platform which sits inside a vertical…

A: Given:The ride spins such that those inside get pinned to the inner walls of the ride.Asked:To draw…

Q: Mark brought a pizza of a radius of 0.5 m. A fly lands on the pizza and walks around the edge for a…

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Q: A pulley with radius of 12 cm pulls a chain as it rotates. If the chain is moving at 4.2 cm per…

A: We know, The relationship between angular velocity (ω) and linear velocity (v) of particle in…

Q: The moon revolving around the Earth is in which type of equilibrium?

A: The moon is revolving around the earth is in unstable equilibrium.

Q: In short hand notation angular momentum is equal to?

A: ANGULAR MOMENTUM:  It is the property of a rotating body given by the product of the moment of…

Q: The earth completes one revolution around the sun in one year. The radius of orbit is 1.5 × 10^11 m.…

A: Given value--- one revolution time T = one year . radius of orbit = 1.5 × 1011 m. We have to…

Q: What is the rotational kinetic energy for 1 kilogram wheel that is rolling along a horizontal…

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Q: The conservation of angular momentum states that if a body contracts (gets smaller), its speed of…

A: This equation says that the angular velocity is inversely proportional to the moment of inertia.…

Q: An orangutan leaps off of a cliff and its body begins to rotate clockwise. If the orangutan then…

A: Solution: We are given that the orangutan leaps off a cliff and then its body begins to rotate…

Q: Why is it more difficult to stop a spinning a raw egg than a spinning hard boiled egg?

A: it more difficult to stop a spinning a raw egg than a spinning hard boiled egg

Q: The earth rotates about its axis once every 24 hours. Find earth’s rotational speed. Group of answer…

A: Given data: Angle displacement (Δθ) = 1 revolution Time (t) = 24 hours Required: The earth's…

Q: Does the center of gravity coincide with the fulcrum? Why?

A: Usually not, however, on uniform materials it can. For instance on a meter stick. There may be two…

Q: What is the effect of temperatures on specific rotation? Explain.

A: The specific rotation of a substance is usually seen at a specific temperature, the temperature…

Q: When a long-range cannonball is fired toward the equator from a northern (or southern) latitude, it…

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Q: When a car drives off a cliff it rotates forward as it falls. For a higher speed off the cliff, will…

A: After driving off a cliff, the front wheels lose contact with the edge of the cliff, so the ground…

Q: A measure of how angular velocity changes over time

A: Angular velocity: It is calculated when object sweeps certain angle( or change in its angular…

Q: When a bowling ball leaves your hand, it may not spin. But farther along the alley, it does spin.…

A: Torque is a measure of the force that can cause an object to rotate about an axis Torque is a vector…

Q: Give some examples of Centrifugal Force?

A: Examples of centrifugal force

Q: You release a solid disk, a hollow ring, a solid sphere, and a hollow sphere down an incline. Which…

A: Let M be the mass and R be the radius. I will be the moment of inertia. The object with the maximum…

Q: In a "Rotor-ride" at a carnival, people rotate in a vertical cylindrically walled "room." (See the…

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Q: Two big bugs, Buzz and Crunchy each of mass 0.65 kg, are siting on a spinning disk on a horizontal…

A: Given Mass of Buzz and Crunchy each = 0.65 kg Buzz is sitting halfway and Crunchy is sitting at the…

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.