A 0.275-kg object is swung in a vertical circular path on a string 0.850 m long as in Figure P7.70. (a) What are the forces acting on the ball at any point along this path? (b) Draw free-body diagrams for the ball when it is at the bottom of the circle and when it is at the top. (c) If its speed is 5.20 m/s at the top of the circle, what is the tension in the string there? (d) If the string breaks when its tension exceeds 22.5 N, what is the maximum speed the object can have at the bottom before the string breaks?
Figure P7.70
Trending nowThis is a popular solution!
Chapter 7 Solutions
COLLEGE PHYSICS,V.1-W/ENH.WEBASSIGN
Additional Science Textbook Solutions
University Physics Volume 1
Lecture- Tutorials for Introductory Astronomy
Physical Science
College Physics
The Cosmic Perspective Fundamentals (2nd Edition)
The Physical Universe
- Instead of moving back and forth, a conical pendulum moves in a circle at constant speed as its string traces out a cone (Fig. P6.68). One such pendulum is constructed with a string of length L = 12.0cm and bob of mass 0.210 kg. The string makes an angle = 7.00 with the vertical, a. What is the radial acceleration of the bob? b. What are the horizontal and vertical components of the tension force exerted by the string on the bob?arrow_forwardA light string can support a stationary hanging load of 25.0 kg before breaking. An object of mass m = 3.00 kg attached to the string rotates on a frictionless, horizontal table in a circle of radius r = 0.800 m, and the other end of the string is held fixed as in Figure P5.17. What range of speeds can the object have before the string breaks? Figure P5.17arrow_forwardWhy is the following situation impossible? The object of mass m = 4.00 kg in Figure P5.18 is attached to a vertical rod by two strings of length = 2.00 m. The strings are attached to the rod at points a distance d = 3.00 m apart. The object rotates in a horizontal circle at a constant speed of v = 3.00 m/s, and the strings remain taut. The rod rotates along with the object so that the strings do not wrap on to the rod. What If? Could this situation be possible on another planet?arrow_forward
- A makeshift sign hangs by a wire that is extended over an ideal pulley and is wrapped around a large potted plant on the roof as shown in Figure P6.10. When first set up by the shopkeeper on a sunny and dry day, the sign and the pot are in equilibrium. Is it possible that the sign falls to the ground during a rainstorm while still remaining connected to the pot? What would have to be true for that to be possible? FIGURE P6.10 Problems 10 and 11.arrow_forwardA ball of mass m = 0.275 kg swings in a vertical circular path on a string L= 0.850 m long as shown in the figure. If its speed is 5.20 m/s at the top of the circle, what is the tension in the string there?arrow_forwardConsider the Sun-Jupiter system. The mass of the Sun isMs= 1.99*10^30 kg and the mass of Jupiter is Mj = 1.90*10^27 kg. Jupiter orbits in a circle about the Sun and the distance between the center of the Sun and the center of the Jupiter is r = 7.78*10^11 m.(a) What is the magnitude of the gravitational force the Sun exerts onJupiter?(b) What is the magnitude of the gravitational force Jupiter exerts on theSun?arrow_forward
- Figure shows a conical pendulum, in which the ball with a mass of m=10.0 kg moves in a horizontal circle at constant speed. If the wire has a length of L=10.0 m and makes an angle of θ=30.0° with the vertical, determine (a) the horizontal (Tx) and vertical (Ty)components of the force exerted by the wire on the ball (b) the radial acceleration of the ball (c) the speed of the ball. cos30o =sin60o=0.866 cos60o =sin30o=0.500 g=9.8 m/s2arrow_forwardFigure shows a conical pendulum, in which the ball with a mass of m=10.0 kg moves in a horizontal circle at constant speed. If the wire has a length of L=10.0 m and makes an angle of θ=30.0° with the vertical, determine (a) the horizontal (Tx) and vertical (Ty)components of the force exerted by the wire on the ball (b) the radial acceleration of the ball (c) the speed of the ball.cos30o =sin60o=0.866 cos60o =sin30o=0.500 g=9.8 m/s2arrow_forwardA small object of mass 0.20 kg is whirled in a horizontal circle at the end of the 1 m long cord. What is the highest speed that the object can have if the cord can sustain a maximum force of 4 newtons without breaking?arrow_forward
- An owner of a speedboat loves high speed but doesn't want to go anywhere. So he tethers the speedboat to a fixed buoy by a strong cable of length 40.0 m40.0 m, which supplies all the centripetal force to run the boat in circles around the buoy. When the tension in the cable is steady at 13500 N13500 N, with what force is the boat's engine pushing the boat? Assume that the mass of the speedboat (including the driver) is 645 kg645 kg. Take the water's drag force to be (450 kg/m)×v2(450 kg/m)×v2, where vv denotes the boat's speed. Ignore any drag force on the cable. Be sure to include the free-body diagram for the boat.arrow_forwardA small block with mass 0.0300 kgkg slides in a vertical circle of radius 0.425 mm on the inside of a circular track. During one of the revolutions of the block, when the block is at the bottom of its path, point AA, the magnitude of the normal force exerted on the block by the track has magnitude 3.90 NN . In this same revolution, when the block reaches the top of its path, point BB, the magnitude of the normal force exerted on the block has magnitude 0.675 NN . 1)How much work was done on the block by friction during the motion of the block from point AA to point BB?arrow_forwardIn the figure, a 105 g ball on a 58.6 cm rope is swung in a vertical circle about a point 255 cm above the ground. If the ball is swung at the slowest speed where the ball goes over the top of the circle without the rope having any slack and the rope is released when the ball is at the top of the loop, how far to the right does the ball hit the floor?arrow_forward
- College PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningCollege PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningPhysics for Scientists and Engineers with Modern ...PhysicsISBN:9781337553292Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
- Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningPhysics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage Learning