A racing car on a flat circular track needs friction between the tires and the track to maintain its circular motion. How much more friction is required for twice the speed?

Q: A 1.25 g pepperoni rests at a distance of 7.5 cm from the centre of a pizza being spun by the pizza…

A: mass (m) = 1.25 g = 0.00125 kg distance from center (r) = 7.5 cm = 0.075 m Angular speed (ω) = 68…

Q: An astronaut is inside a centrifuge that has a radius of 10 m. The astronaut is experiencing 10g,…

A: Given,  Radius, r=10 m Centripetal acceleration, ac=98 m/s2 Angular velocity,…

Q: An object of mass 1.0 kg moves in a circle of radius 1.0 m at constant speed of 2.0 m/s. Find the…

A: The expression for the work done is W=∫F·ds In this case the centripetal force is given by F=mv2r…

Q: a 2000 kg car rounds a circular turn of radius 16 M if the road is flat and the friction betweeen…

A: The given data are: m=2000 kgr=16 mμ=0.41 Here, m denotes the mass, r denotes the radius and μ…

Q: A skateboarder is attempting to make a circular arc of radius r = 19 m in a parking lot. The total…

A: Draw the free-body diagram of the skateboard. The diagram consists of the radial force only since…

Q: Where on the Earth's surface is the centrifugal acceleration due to its rotation the greatest? Why?

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Q: It has been suggested that rotating cylinders about 16.5 mi long and 4.65 mi in diameter be placed…

A: Given data The length of the cylinder is l = 16.5 mi. The diameter of the cylinder is d = 4.65 mi =…

Q: A 60 kg woman rides an amusement park ride in which the 190 kg car traverses a circle of radius R =…

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Q: A bicycle with tires 50 cm in diameter travels 4.4  km How many revolutions do the wheels make?

A: Given data: The diameter of the bicycle tire, D=50 cm. The distance traveled by the tire, S=4.4 km.…

Q: A rod 2m long rotates in a horizontal plane about a vertical axis through its center. At each of the…

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Q: It has been suggested that rotating cylinders about 20.0 mi long and 3.53 mi in diameter be placed…

A: It is given that, l=20 mi=32186.9 md=3.53 mir=d2=3.532=1.765 mi=2840.4922 m

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: A 4.0 kg ball is tied to a string is rotating in a horizontal circle of radius 1.0 m. the maximum…

A: Maximum tension = 200 N radius = 1 m mass = 4 kg maximum rotational speed ??

Q: A 80.0 kg passenger is seated 12 m from the center of the loop of a roller coaster. What…

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Q: A car enters a level, unbanked semi-circular hairpin turn of 300 m radius at a speed of 40 m/s. The…

A: The centripetal acceleration for the semi circular motion is provided by the kinetic friction…

Q: When you take your 1900-kg car out for a spin, you go around a corner of radius 53 m with a speed of…

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Q: A 905 kg car travels around a circular track with a circumference of 3.25 km. If the magnitude of…

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Q: 4.15 PQ For a rotating body, is the acceleration toward the center of rotation a centripetal or…

A: Answer:-  Centripetal acceleration :- The acceleration of a body traversing in a circular path.…

Q: 45. A particle of mass 4 kg is moving in horizontal circle of radius 2 m. The centripetal force is…

A:

Q: A gondola on an amusement park ride spins at a speed of 13 revolutions per minute. If the gondola is…

A: Given data:  Angular speed (ω) = 13 rev/min Distance from center (r) = 21 ft Required: The linear…

Q: It has been suggested that rotating cylinders about 15.0 mi long and 5.89 mi in diameter be placed…

A: Given, l= 15mi =15*1609m = 24135 m d= 5.89mi = 5.89*1609m =9477.01 m Where, l is the length of the…

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

A: The time for one revolution around the circle is, T=63=2 sec

Q: A car goes around a flat curve of radius 40 m at a speed of 14 m/s. What must be the minimum…

A: Given Data : The velocity of the car is given as v=14 ms The radius of the turn is given as r = 40m.…

Q: Consider a point on a bicycle wheel as the wheel turns about a fixed axis, neither speeding up nor…

A: Given that a point on a bicycle wheel as the wheel turns about a fixed axis, neither speeding up nor…

Q: It has been suggested that rotating cylinders about 16.5 mi long and 5.56 mi in diameter be placed…

A: The expression for find angular speed of the cylinder is ω=acr=acd2

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 stone, of mass m, is attached to a strong string and whirled in a vertical circle of radius r. At…

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Q: What is the magnitude of the car's centripetal acceleration when the car is at the top of the loop?…

A: The centripetal acceleration is defined as when the body moves in the circular path and changes its…

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

A:

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: r = 0.2 meter circumference of circle = 2(pi)r = 2 x 3.14x 0.2 m circumference = 1.256 m

Q: It has been suggested that rotating cylinders about 18.5 mi long and 4.60 mi in diameter be placed…

A:

Q: A toy car of mass 9.5 kg is moving in a circular path (9m In diameter) at a tangential velocity of 9…

A:

Q: ron man starts to uniformly circle around the Earth at its equator, with a radius of 6400 km.  When…

A: Given: The orbital radius of the iron man is 6400 km. The centripetal acceleration is 1g.

Q: It has been suggested that rotating cylinders about 18.5 mi long and 5.52 mi in diameter be placed…

A:

Q: It has been suggested that rotating cylinders about 10.5 mi long and 3.54 mi in diameter be placed…

A: When in space the centripetal force on the cylinder will be equal to the gravitational force on the…

Q: A stone on the edge of the tire of a unicycle wheel with a radius of 0.25 m has a centripetal…

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Q: When a point on the rim of a 0.30-m-radius wheel experiences a centripetal acceleration of 4.0 m/s2,…

A: Given ,              Radius of rim =0.30 m                 centripetal acceleration =4.0 m/s2…

Q: An object moves in a circle. If the mass is tripled, the speed halved and the radius unchanged then…

A: When a body experiences a circular motion, it experiences a centripetal force towards center.…

Q: After 3 seconds, the circular part of a roller coaster is able to make the ride travel from an…

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Q: It has been suggested that rotating cylinders about 10.5 mi long and 6.32 mi in diameter be placed…

A: The expression for the linear acceleration in terms of angular velocity is,

Q: Where on the Earth's surface is the centrifugal acceleration due to its rotation the least? Why?

A: Centrifugal force is a fictitious force that appears to act on an object in when its motion is…

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 figure above is taken from one of the Webassign HW problems which shows a person held up against…

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Q: A stone of mass m is attached to a string and is rotated in .a vertical circle of radius r at bottom…

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Q: I need help with this Hw Problem. Im having trouble understanding the concept.

A: Calculate the centrifugal force of the car:

Q: In uniform circular motion, the net force is perpendicular to the velocity and changes the direction…

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Q: A 1200 kg car is driving in a circle with a radius of 10 m. If the car has a tangential velocity of…

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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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Centripetal Force

A particle, body, object or certain mass while travelling in a rotational path or semicircular path, experiences an inertia force. If that inertia force pulls the towards the inward of the imaginary circle in the rotation, it is termed as centripetal force.