A ball is tied to the end of a cable of negligible mass. The ball is...
6. A ball is tied to the end of a cable of negligible mass. The ball is spun in a circle with a radius 2.00 m making 7.00 revolutions every 10.0 seconds. What are the (a) magnitude of the angular velocity in rad/s, (b) linear velocity in m/s, and (c) centripetal acceleration of the ball (in m/s')? Hint: 7 revolution divided by 10 seconds gives 0.7 rev/s, convert to rad/s
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...
Consider a ball of mass 0.110 kg being spun in a horizontal circle of radius r-0.50 m, as shown to the right. When the ball reaches an angular velocity (o) of 2.00 rad/s, it is given a constant angular acceleration of a- 2.00 rads. You can assume that the radius of the circular path followed by the ball remains constant during this acceleration. After precisely 3.00 seconds of this angular acceleration, the ball breaks off the string (a) In what...
As a car drives with its tires rolling freely without any slippage, the type of friction acting between the tires and the road is A) static friction. B) kinetic friction. C) a combination of static and kinetic friction. D) neither static nor kinetic friction but some other type of friction. E) It is impossible to tell what type of friction acts in this situation. A car of mass m goes around a banked curve of radius r with speed v....
A long cable of negligible mass is wrapped around the periphery of a solid diskot radius r and mass m. One end of the cable is fixed, and the disk is released from rest in the position shown. Find the (a) initial acceleration a of the center of the disk. (b) initial angular acceleration a of the disk. (c) tension Tin the cable. (d) time it takes for the disk to rotate one revolution. Note: Express your answers in terms...
2. A ball tied to the end of a string 65 cm in length swings in a vertical circle under the influence of gravity. When the string makes an angle of thetha=25 degrees with the vertical, the ball has a speed of 2.0 m/s. a. Find the magnitude and the direction of the total acceleration when thetha=25 degrees.
A tennis ball connected to a string is spun around in a vertical, circular path at a uniform speed. The ball has a mass m = 0.175 kg and moves at v = 5.22 m/s. The circular path has a radius of R = 1.14 m 1.What is the magnitude of the tension in the string when the ball is at the bottom of the circle? 2.What is the magnitude of the tension in the string when the ball is...
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 150 gram ball at the end of a string is swinging in a horizontal circle of radius 1.15. the ball takes 5 seconds to complete 20 revolutions. a. what is the time for 1 revolution of ball? b. what is the tangential speed of the ball? c. what is the tension in the string?
An air puck of mass 0.18 kg is tied to a string and allowed to revolve in a circle of radius 1.1 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 1.3 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? (6) What is the force...