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) the angular momentum is given by mvr
b)Angular momentum = 0.4*4.5*3 = 5.4 kg-m2/s
A 6.5 kg stone is tied to a 4.5 m long string and swung around a circle at a constant angular velocity 4.3 Calculate the magnitude of the torque about the origin :
A 6.6 kg stone is tied to a 1.5 m long string and swung around a circle at a constant angular velocity 4.3 Calculate the magnitude of the torque about the origin
A 7.3 kg stone is tied to a 6.3 m long string and swung around a circle at a constant angular velocity 6.4 Calculate the magnitude of the torque about the origin 11867.63 x
A 9.9 kg stone is tied to a 6.2 m long string and swung around a circle at a constant angular velocity 4.9. Calculate the magnitude of the torque about the origin. * A uniform meter stick is placed on and parallel to the x axis, with the 50 cm mark at the origin. It is pivoted at the 50 cm mark. A -6.61 N force is applied at the 13 cm mark, and a -3.02 N force is applied...
27. An air puck of mass m, = 0.25 kg is tied to a string and allowed to revolve in a circle of radius R = 1.0 m on a frictionless hori- zontal table. The other end of the string passes through a hole in the center of the table, and a mass of m, = 1.0 kg is tied to it (Fig. P7.27). The suspended mass remains in equilibrium while the puck on the tabletop revolves. (a) What is...
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.
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 stone is tied to a string (length = 0.552 m) and whirled in a circle at the same constant speed in two different ways. First, the circle is horizontal and the string is nearly parallel to the ground. Next, the circle is vertical. In the vertical case the maximum tension in the string is 5.30% larger than the tension that exists when the circle is horizontal. Determine the speed of the stone.
An air puck of mass 0.23 kg is tied to a string and allowed to revolve in a circle of radius 1.2 m on a frictionless horizontal table. The other end of the string passes through a hole in the center of the table, and a mass of 0.9 kg is tied to it. The suspended mass remains in equilibrium while the puck on the tabletop revolves. a) What is the tension in the string? (b) What is the force...
A small ball of mass m is tied to a string and set rotating with negligible friction in a vertical circle of radius R with earth's gravity g acting. (a) What is the speed of the ball at the top of the circle so that the tension in the string vanishes there? (b) Given this, what is the speed of the ball at the bottom of the circle, and (c) what is the tension in the string at the bottom...