Strictly speaking, as more and more skyscrapers are built on the surface of Earth, does the day tend to become longer or shorter? And, strictly speaking, does the falling of autumn leaves tend to lengthen or shorten the 24-hour day? What physics principle supports your answers?

Q: An ice skater jumps in the air and brings their arms and legs as close to their center of mass as…

A: Here principle of conservation of angular momentam is applied. As sakter lands he increases…

Q: Why is the following situation impossible? A mischievous child goes to anamusement park with his…

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Q: A bicycle is turned upside down while its owner repairs a flat tire. A friend spins the other wheel…

A: Given that a wheel is rotating .  Radius of the wheel, R= 0.335 m Height to which first drop rises ,…

Q: A small block on a frictionless horizontal surface has a mass of 0.25 kg. It is attached to a…

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Q: Eire is tied to a rope that is tied to the branch of a tree so that the tire swings in a circular…

A: u= initial velocity when child was at platform.

Q: Suppose a coupe's standard tires are replaced with tires 1.55 times larger in diameter. What will…

A: Standard tires are replaced by tires 1.55  times larger in diameter .

Q: It has been suggested that rotating cylinders about 17.5 mi long and 6.12 mi in diameter be placed…

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Q: A scientist claims that people who compete in the Olympic event of skeleton are insane. With their…

A: Speed of runner in Olympic : v = 75 mph = 753600 = 0.0208 m/s Radius of Olympic track: r = 50 m Mass…

Q: A pail of water can be whirled in a vertical circular path such that no water is spilled. Why does…

A: Given: A pail of water can be whirled in a vertical circular path such that no water is spilled.

Q: It has been suggested that rotating cylinders about 18.0 mi long and 4.18 mi in diameter be placed…

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

Q: A ball with an initial velocity of 5.17 m/s rolls up a hill without slipping. (a) Treating the ball…

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Q: An Air puck of mass m1 =0.24 kg is tied to a string and allowed to revolve in a circle of Radius…

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Q: It has been suggested that rotating cylinders about 17.0 mi long and 4.55 mi in diameter be placed…

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Q: Figure 5.36 shows a rotating water sprinkler. The area of the nozzie at each end of the arm is 1.2…

A: Calculate the relative velocity of flow from A.

Q: A bicycle is turned upside down while its owner repairs a flat tire on the rear wheel. A friend…

A: Radius of wheel is r = 0.333 m Initial height of the turn is h1 = 55.1 cm = 0.551 m Final height of…

Q: You enter the carnival ride called "The Rotor". The circular room is spinning and you and other…

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Q: Two identical discs are spinning on a vertical rod, at different rotation rates. The bottom disc is…

A: Rotation rate of bottom disk = 5300  rev/sRotation rate of top disk = 8300 rav/s Mass = 280 g Radius…

Q: A 25-kg wheel has a radius of 40 cm and turns freely on a horizontal axis, The radius of the wheel…

A: This problem deals with rotational as well as translational dynamics. The situation given to us is…

Q: Two identical discs are spinning on a vertical rod, at different rotation rates. The bottom disc is…

A: Given; Angular rotation rate of top disc = 8500 rev/s Angular rotation rate of bottom disc = 4700…

Q: A 1.0- kg mass is attached to a string wrapped around a shaft of negligible mass and having a 4.0-…

A: Given: The mass attached to the string is 1.00 kg. The height of this mass is 1.3 m. The speed…

Q: Two bugs sit on a merry-go-round. The Ladybug is on the edge. The Gent bug is halfway between her…

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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: A rod of length 1.21 m and mass 4.3 kg can freely rotate around uppermost point (see Fig). A bullet…

A: According to question--- Given data-- length of road L = 1.21 m. mass of road = 4.3 kg. mass of…

Q: The figure below shows a sphere of mass 4 kg attached to a horizontal rod by two strings of equal…

A: This question can be solved by applying the basic concepts of circular motion.

Q: Why do roads on mountains have inward inclination at sharp turns?

A: When a vehicle moves along a horizontal curved road on a mountain, the necessary centripetal force…

Q: The radius of a car tire is 0.2m. The distance moved by the car if the tire makes 100 rotations is O…

A: The radius of a car tire is 0.2m. The distance moved by the car if the tire makes 100 rotations is

Q: A small polished glass ball P of mass mrall = 20 g moves on the inside smooth surface of a spherical…

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Q: horizontal circular platform rotates counterclockwise about its axis at the rate of 0.827 rad/s.…

A: Answer :-  Given that :- platform rotates counterclockwise about its axis at the rate of 0.827…

Q: It has been suggested that rotating cylinders about 18.5 mi long and 4.40 mi in diameter be placed…

A: AIM: To determine the angular speed of the cylinder such that, the centripetal acceleration is equal…

Q: The water is raised from a banner by a bucket, its total mass is filled with water 23 kg, the bucket…

A: Given information: Here, m is the bucket + water mass, r is the pulley’s (cylindrical) radius and l…

Q: The distance between the centers of the wheels of a motorcycle is 155 cm. The center of mass of the…

A: Given data:    Distance, r = 155cm     Height, h = 88cm

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: It has been suggested that rotating cylinders about 13.0 mi long and 6.42 mi in diameter be placed…

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Q: You are in a carnival ride that consists of a circular room that spins around its center. You stand…

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Q: In the construction of railroads, curvature of the track is measured in the following way. First a…

A: We have been given that dθ = angle between two tangents = 1.200let L be the distance between two…

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: A bicycle is turned upside down while its owner repairs a flat tire on the rear wheel. A friend…

A: Given: The radius of the front wheel = 0.408 m Height of the drop from the tire = 54.3 cm Height of…

Q: A 1.0- kg mass is attached to a string wrapped around a shaft of negligible mass and having a 8.0-…

A: The total energy of the sytem must be conserved. The initial energy of the sytem is equal to the…

Q: An air puck of mass m1 = 0.27 kg is tied to a string and allowed to revolve in a circle of radius R…

A: Mass m1 = 0.27 kg Mass m2 = 0.8 kg Radius of the circle is r = 1.1 m

Q: A 6 - m string wounded on the rim of a wheel (r = 10.28 cm) is being pulled out at a rate of 61…

A: length of string (L) = 6 m radius (r) = 10.28 cm= 0.1028 m v = 61 cmsec= 0.61 ms

Q: A cube with side length a = 80 cm and made out of concrete ( density of 1.8 · 10 kg/m³ ) should be…

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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: The distance between the centers of the wheels of a motorcycle is 155 cm. The center of mass of the…

A: Distance between the centers of the wheel: d=155 cm Distance of center of mass from the rear wheel:…

Q: You sit at the middle of a large turntable at an amusement park as it is set spinning and then…

A: When we crawl toward the edge of the turntable, the rotational inertia of the system is increased…

Q: It has been suggested that rotating cylinders about 10 mi long and 5.0 mi in diameter be placed in…

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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.