a ball at the end of a string of 0.8 m rotates at a constant speed of 5 m/s, what is the time needed to complete one revolution? 2.00 s 2.25 s 1.00 s

Q: A helicopter blade spins at exactly 100 revolutions per minute.  Its tip is 5.00 m from the center…

A: The average speed is the ratio of the total distance travelled by a body and the time taken to…

Q: 40. A train travels at a speed of 144 km/h. Its wheels per- fectly adhere to the rails (no sliding)…

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Q: If an object moves in a purely rotatory motion, then each constituent particle of the body moves in…

A: In a pure rotational motion, each constituent particle of the body moves in a circle,the center of…

Q: 1. An object travels around a circle10.0 full turns in 2.5 seconds. angular displacement, 0 in…

A: Given, Number of turns = 10  Time = 2.5 seconds

Q: An object in rotation is Never accelerating Accelerating some of the time Always accelerating More…

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Q: A student attaches a ball to the end of a 0.6 m long rope and then swings it in a vertical circle.…

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Q: A bicycle wheel rolls forward 20 [meters] in 10 [seconds] at a constant speed. To someone standing…

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Q: A 5.4-m-diameter merry-go-round is initially turning with a 4.1 s period. It steadily slows down and…

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Q: A ball moves with constant speed of 4 m / s around a circle of radius r = 0.25 m. What is the…

A: The angular velocity is,

Q: A child is riding a merry-go-round that is turning at 3.60 rpm. If the child is standing 4.65 m from…

A: Given: Angular velocity, ω=3.60 rpm Distance from center, r=4.65 m Let's find linear velocity of…

Q: A record player has a velocity of 25.25 rad/s. How fast is the record spinning in m/s at a distance…

A: To solve the given question, we have to use the relation between the angular velocity and linear…

Q: Find (a) the circumference of the circle (b) the tension in the string (c) the centripetal…

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Q: A car is moving at a rate of 70 miles per hour, and the diameter of its wheels is 2.5 feet. (a)…

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Q: A rotating disk travels takes 0.70 s to complete its first revolution along a circular path. As the…

A: When an object rotates with a constant angular acceleration then similar to third equation of motion…

Q: A ball is tied to the end of a cable of negligible mass. The ball is spun in a circle with a radius…

A: Given: The radius of the circle r = 2 m The number of revolution it makes is 7 Rev The time taken…

Q: A car goes around a curve with a radius of 120 m. The car goes through an angle of 60 degrees at a…

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Q: A wheel spinning at 3 m/s uniformly accelerates to 6 m/s in 4 s. Its radius is 20 cm. How far around…

A: Given:             Initial speed u = 3 m/s             Final speed v= 6 m/s…

Q: A 22.0 kg child is riding a playground merry-go-round that is rotating at 40.0 rev/min.  What…

A: Given,

Q: A car is driving at 3.5 m/s when it begins to accelerate. The 24.8 cm radius wheels accelerate at 19…

A: Angular acceleration α=dωdt=ω/t ω=angular speed at time t Linear distance=linear speed /time

Q: What is the rate of revolution [in revolutions per minute (or rpm)] of a centrifuge if a particle…

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Q: Microwave ovens rotate at a rate of about 6 rpm.  What is this in radians per second? Group of…

A: The revolution per minute is 6rpm.

Q: Earth revolves on its axis once every 24 hr. Assuming that Earth’s radius is 6400 km, find the…

A: Given: The revolution of Earth is 24 hr. The Earth's radius is 6400 km.

Q: A 40 kg child sits on the edge of a carnival ride at a radius of 4 m. The ride makes 3 revolutions…

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Q: a cd has a diameter of 120mm and spins at 540 rpm a. what is a period b. if a speck of dust is…

A: Hello. As your problem has multiple sub-parts, so we will solve the first three sub-parts. If you…

Q: A Merry-Go-Round, 2.4 m in diameter, makes 0.25 revolution every minute. What is the linear speed of…

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A: The angle covered in one minute is 2.52π radians=5π radians

Q: 24. A bucket of water is swung in a vertical circle at arm's length of 0.70 m. The minimum number of…

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Q: A helicopter blade spins at exactly 90 revolutions per minute. Its tip is 6.50 m from the center of…

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Q: A Ferris wheel rotating at 25 rad/s slows down with a constant ate of magnitude 3.7 rad/s2. How many…

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Q: Spin Dizzzy. A 0.200 [g] bee flies at a constant speed along a horizontal circular path with a…

A: Mass of the bee m=0.2 g=2*10-4kg, diameter of the circular path d=84 cm=0.84 m (radius r=0.42 cm)…

Q: A 0.25 kg ball attached to a string is rotating in a horizontal circle of radius 0.5 m. If the ball…

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Q: The wheels of a bicycle make 35 revolutions as the bicycle reduces its speed uniformly from 60.0…

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Q: A horse centers away from a stranger in a straight line. Moving 121 m away in 14 seconds. It then…

A: D = 121 m, T =14 s  d = 60.5 m, t = 4.8 s

Q: The athlete shown in the figure rotates a 1 kg disc along a path of radius 1.06 m. The maximum speed…

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Q: You roll a ball along a straight line to your friend who is 7 m away from you. Supposed the ball…

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Q: The tires of a car make 74 revolutions as the car reduces its speed uniformly from 93.0 km/h to 64.0…

A: Part (c) The initial speed of the car is u = 93 km/h. The final speed of the car is v = 64 km/h. The…

Q: 4. A75 kg person is riding in a Ferris wheel (which rotates vertically) that has a radius of 12.5…

A: The centripetal force is given by  F =mv2r The time period is given by  w =2πT where, w is the…

Q: A Ferris wheel has a radius of 30 m and its centre is 32 m above the ground. It rotates once every…

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Q: An electric fan revolving at 900 rpm slows down uniformly to 300 rpm while making 50 revolutions.…

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Q: An object moves in a circular path and rotate at a rate of 22 revolutions/s , then the periodic time…

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Q: What is centrifugal force?

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: A Ferris wheel (radius r = 17.0 m) moves in a vertical circle as illustrated in Diagram Q. The…

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Q: A mass of 1.5 kg moves in a circle of radius 25.0 cm at a frequency of 2.0 s. Calculate a) the…

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Angular speed, acceleration and displacement

Angular acceleration is defined as the rate of change in angular velocity with respect to time. It has both magnitude and direction. So, it is a vector quantity.

Angular Position

Before diving into angular position, one should understand the basics of position and its importance along with usage in day-to-day life. When one talks of position, it’s always relative with respect to some other object. For example, position of earth with respect to sun, position of school with respect to house, etc. Angular position is the rotational analogue of linear position.