1. (a) A grinding wheel of radius 7.6 cm is rotating at 1750 rpm. (i) What is the speed of a point on the outer edge of the wheel? (ii) What is the centripetal acceleration of the point? (b) A "swing" ride at a carnival consists of chairs that are swung in a horizontal circle by 14.6 m cables attached to a vertical rotating pole, as shown in the picture below, with the cable at a 60° angle from the pole. (i) Determine the tension in the cable attached to the chair. (ii) Find the speed of the chair. 60° (c) In Homework 5 question 5, you calculated the orbital period of a planet. Now let us determine the mass of the star that it is orbiting about. Two newly discovered planets follow circular orbits around a star in a distant part of the galaxy. The orbital speeds of the planets are 45.0 km/s and 57.5 km/s. The slower planet's orbital period is 7.24 years. What is the mass of the star?

Q: An athlete swings a 3.40-kg ball horizontally on the end of a rope. The ball moves in a circle of…

A: Given that:m=3.40 kgr=0.600 mω=0.650 rev/s

Q: An ordinary workshop grindstone has a radius of 7.50 cm and rotates at 110 Hz. (a)  What is the…

A: v=rω=r2πf=2π7.50 cm1 m100 cm110 Hz=51.8 m/s

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A: Given: The mass of the ball is 6.9 kg. The radius of the circular path is 0.67 m. The angular speed…

Q: An athlete swings a 5.50-kg ball horizontally on the end of a rope. The ball moves in a circle of…

A:

Q: A 19.0 kg child is riding a playground merry-go-round that is rotating at 40.0 rpm. (a) What…

A:

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A: As per our guidelines, we are supposed to answer only first three subparts in case of multiple…

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A: Given data: The radius of front gear is rf=3.0 in. The speed of front gear is ωf=60…

Q: is

A:

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A: The expression for radial acceleration is,

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A:

Q: A child rides a scooter in a circular path with a radius of 3.0 m. The tangential speed of the…

A: radius (R) = 3 m v= 3 msmass of child and scooter(m) = 45 kg

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A:

Q: The circular blade of a table saw is 50 cm in diameter and spins at 50 rpm.How long must it rotate…

A: Given data :- diameter d = 50 cm radius r = 25 cm = 0.25 m frequency n = 50 rpm = 50 round per…

Q: An athlete swings a 4.10-kg ball horizontally on the end of a rope. The ball moves in a circle of…

A: Answer Given  Mass of the ball m = 4.10 kg Radius r = 0.710 m  Angular speed ω = 0.520 rev/s

Q: When a carpenter shuts off his circular saw, the 10.0-inch-diameter blade slows from 4385 rpm to…

A: Given:Diameter of the blade = 10 inchRadius of the blade = 5 inchAngular velocity = 4385 rpmTime…

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A:

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A:

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A: Given data: The mass of vehicle is m=100 kg. The radius of circle is r=5 m. The initial speed is…

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

Q: A child whirls a toy plane around in a circle of radius 60cm. She notices it takes 10s to make 12…

A: