The figure below shows a sphere of mass 4 kg attached to a horizontal rod by two strings of equal length and negligible mass. The rod is rotating about its axis and causes the 4 – kg mass to rotate in a circle centred on the rod. If the sphere is rotating at a speed of 4 m/s when it is at the lowest point in the circle, the tension in each of the strings is 13 m+ 2 m 2 m 4 kg

The figure below shows a sphere of mass 4 kg attached to a horizontal rod by two strings of equal length and negligible mass. The rod is rotating about its axis and causes the 4 – kg mass to rotate in a circle centred on the rod. If the sphere is rotating at a speed of 4 m/s when it is at the lowest point in the circle, the tension in each of the strings is 13 m+ 2 m 2 m 4 kg

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter7: Rotational Motion And Gravitation

Section: Chapter Questions

Problem 27P: An air puck of mass m1 = 0.25 kg is tied to a siring and allowed to revolve in a circle of radius R...

See similar textbooks

Similar questions

An air puck of mass m1 = 0.25 kg is tied to a siring and allowed to revolve in a circle of radius R = 1.0 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 m2 = 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 the tension in the string? (b) What is the horizontal force acting on the puck? (c) What is the speed of the puck? Figure P7.27
The 0.20 kg puck on the frictionless, horizontal table shown is connected by a string through a hole in the table to a hanging 1.20 kg block. With what speed must the puck rotate in a circle of radius 0.50 m if the block is to remain hanging at rest?
A horizontal circular platform rotates counterclockwise about its axis at the rate of 0.919 rad/s. You, with a mass of 68.1 kg,walk clockwise around the platform along its edge at the speed of 1.09 m/s with respect to the platform. Your 20.1 kg poodle also walks clockwise around the platform, but along a circle at half the platform's radius and at half your linear speed with respect to the platform. Your 18.3 kg mutt, on the other hand, sits still on the platform at a position that is 3/4 of the platform's radius from the center. Model the platform as a uniform disk with mass 90.3 kg and radius 1.97 m. Calculate the total angular momentum of the system.
The centers of the Earth and its moon are separated by an average of 3.84 × 105 m and the moon’s mass is 7.35 × 1022 kg. What force does Earth’s moon exert on a 10 kg mass?
a swing ride at a carnival consists of chairs that are swung in a circle by 14.4m cables attached to a vertical rotating pole (angle theta=60deg). Suppose the total mass of a chair and it’s occupant is 260kg. Determine the tension in the cable attached to the chair and the speed of the chair.
A horizontal circular platform rotates counterclockwise about its axis at the rate of 0.851 rad/s. You, with a mass of 72.5 kg,walk clockwise around the platform along its edge at the speed of 1.05 m/s with respect to the platform. Your 20.9 kg poodle also walks clockwise around the platform, but along a circle at half the platform's radius and at half your linear speed with respect to the platform. Your 17.7 kg mutt, on the other hand, sits still on the platform at a position that is 3/4 of the platform's radius from the center. Model the platform as a uniform disk with mass 90.7 kg and radius 1.99 m. Calculate the total angular momentum ?tot of the system.
A horizontal circular platform rotates counterclockwise about its axis at the rate of 0.899 rad/s.0.899 rad/s. You, with a mass of 70.1 kg,70.1 kg, walk clockwise around the platform along its edge at the speed of 1.07 m/s1.07 m/s with respect to the platform. Your 20.9 kg20.9 kg poodle also walks clockwise around the platform, but along a circle at half the platform's radius and at half your linear speed with respect to the platform. Your 18.5 kg18.5 kg mutt, on the other hand, sits still on the platform at a position that is 3/4 of the platform's radius from the center. Model the platform as a uniform disk with mass 92.1 kg92.1 kg and radius 1.85 m.1.85 m. Calculate the total angular momentum of the system.
An air puck of mass 0.223 kg is tied to a stringand allowed to revolve in a circle of radius0.73 m on a horizontal, frictionless table. Theother end of the string passes through a holein the center of the table and a mass of 1.48 kgis tied to it. The suspended mass remains inequilibrium while the puck revolves.0.73 mv1.48 kg0.223 kgWhat is the speed of the puck? Theacceleration due to gravity is 9.8 m/s
A puck of mass m=180g on a horizontal, frictionless table is connected to a string that passes through a small hole in the table, as shown in the following figure (attached) The puck is set into circular motion of radius R=50cm with a speed vi = 2.2 m/s. If the string is then pulled from the bottom as shown, so that the radius of the circular path is decreased to r=20cm, what is the final speed, vf, of the puck?
cht3 8, A ball with a mass of 0.250 kg is tied to a weak string with a breaking strength of 20.0 N. It is spun in a horizontal circle on a tabletop in a circle of radius 0.950 m. At what speed will the string break?
A mass of 1.5 kg that is located on frictionless horizontal surface is attached at the end of a string of length 2.52 m and rotate on a circular path with a linear velocity of 7.9 m/s. The tension (N) in the string is:
A child of mass m=19 kg rides on a Ferris wheel as shown in Figure below. The child moves in a vertical circle of radius r =1.48 m at a constant speed of 2.4 m/s. Determine magnitude of the force exerted by the seat on the child at the bottom of the ride. Take g=9.81 m/s2.