A ball is fixed to the end of a rod and is swung in a circle...
A ball is fixed to the end of a rod and is swung in a circle at
a constant rate. Rank the angular momentum of the ball for the
values of mass m, path radius r, and speed v given in the cases
below.
Homework Answers
1) L = mvr = 28 kg m^2 /s
2) L = mvr = 36 kg m^2 /s ( m =2 r=3 v=6 highest angular momentum )
3) L mvr = 4 kg m^2 /sec ( m=2 r=1 v=2 smallest angular momentum )
4) mvr = 18 kg m^2 /sec
A stone of mass m is tied to a string and swung at speed v in...
A stone of mass m is tied to a string and swung at speed v in a circle of radius r. (a) Write the equation for the angular momentum of the stone. (b) Calculate the angular momentum of a 0.40-kg stone swung at 4.5 m/s in a circle with radius 3.0 m.
A 0.3 kg ball, at the end of a 0.75 m string is swung in a...
A 0.3 kg ball, at the end of a 0.75 m string is swung in a circle at a constant velocity of 4 m/sec. The centripetal force of the ball is: _________ , and the angular momentum of the ball is: _________. I know that the answer is: 6.4 N and 0.9 kgm2, but I have no idea how to solve the answer. Please explain and show all of the steps to get the answer.
A ball of mass m is connected to one end of a rubber band and swung...
A ball of mass m is connected to one end of a rubber band and swung in a circle. The rubber band has spring constant k, and its unstretched length is r0. If it is swung at an angular velocity ω, to what length will it stretch the rubber band? Please use energy if you can !! I started to try it using spring potential = rotational kinetic and used I = mr^2 for moment of inertia. but if i...
A centripetal force acts on a ball of mass m = 1kg being swung in a...
A centripetal force acts on a ball of mass m = 1kg being swung in a circle of radius r = 1m at a speed of v = 200m/s. How much work does this force do?
Flashlight A 0.7- kg flashlight is swung at the end of a string in a horizontal...
Flashlight A 0.7- kg flashlight is swung at the end of a string in a horizontal circle of 0.45- m radius with a constant angular speed. If no torque is applied, what must the radius become if the angular speed of the flashlight is to be halved?
A ball at the end of a long rope is swung in a horizontal circular path....
A ball at the end of a long rope is swung in a horizontal circular path. The rope is then pulled in so that the radius of the path is 1/2 as big. How does the tangential speed of the ball change?
A small ball at the end of a string that passes through a tube is swung...
A small ball at the end of a string that passes through a tube is swung in a circle. When the string is pulled downward through the tube the angular speed of the ball: A) increases; B) decreases; C) does not change;
Please show all steps in detail. Thanks a ton! Whirl the ball on a string in a horizontal circle, being.Whirl the ba...
Please show all steps in detail. Thanks a ton!
Whirl the ball on a string in a horizontal circle, being.Whirl the ball again in a horizontal circle. Reduce the radius r of the circle to about 2 r by pulling or careful not to hit anybody with it. Try to maintain the the string hanging below your hand. What all at constant speed. You will find it useful to run happened to the speed of the ball? Did you notice...
A small 460-gram ball on the end of a thin, light rod is rotated in a...
A small 460-gram ball on the end of a thin, light rod is rotated in a horizontal circle of radius 1.1 m . Calculate the moment of inertia of the ball about the center of the circle. Calculate the torque needed to keep the ball rotating at constant angular velocity if air resistance exerts a force of 0.021 N on the ball. Ignore air resistance on the rod and its moment of inertia.
A small 460-gram ball on the end of a thin, light rod is rotated in a...
A small 460-gram ball on the end of a thin, light rod is rotated in a horizontal circle of radius 1.1 m . Part A Calculate the moment of inertia of the ball about the center of the circle. Part B Calculate the torque needed to keep the ball rotating at constant angular velocity if air resistance exerts a force of 0.021 N on the ball. Ignore air resistance on the rod and its moment of inertia.
Please show all steps in detail. Thanks a ton!
Whirl the ball on a string in a horizontal circle, being.Whirl the ball again in a horizontal circle. Reduce the radius r of the circle to about 2 r by pulling or careful not to hit anybody with it. Try to maintain the the string hanging below your hand. What all at constant speed. You will find it useful to run happened to the speed of the ball? Did you notice...
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