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A flat puck (mass M) is revolved in a circle on a frictionless air hockey table top, and is held in this orbit by a light cord which is connected to a dangling mass (mass m) through a central hole as shown in Fig. 5–48. Show that the speed of the puck is given by
FIGURE 5–48 Problem 80.
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Pearson eText -- Physics for Scientists and Engineers with Modern Physics -- Instant Access (Pearson+)
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College Physics
Physics for Scientists and Engineers: A Strategic Approach, Vol. 1 (Chs 1-21) (4th Edition)
Essential University Physics (3rd Edition)
The Cosmic Perspective (8th Edition)
College Physics (10th Edition)
Essential University Physics: Volume 2 (3rd Edition)
- An average-sized asteroid located 5.0107km from Earth with mass 2.01013kg is detected headed directly toward Earth with speed of 2.0km/s . What will its speed be just before it hits our atmosphere? (You may ignore the size of the asteroid.)arrow_forwardA space capsule of mass 505 kg is at rest 8.00 x 10' m from the center of the Earth. When it has fallen 5.00 x 10° m closer to the Earth, finu le (a) What is the change in the system's gravitational potential energy? (b) Find the speed of the satellite at that point. m/sarrow_forward14–83. A rocket of mass m is fired vertically from the surface of the earth, i.e., atr = r. Assuming that no mass is lost as it travels upward, determine the work it must do against gravity to reach a distance n. The force of gravity is F = GM,m/² (Eq. 13–1), where M is the mass of the earth and r the distance between the rocket and the center of the earth.arrow_forward
- Problem 6 : Estimate the kinetic energy of the Mars with respect to the Sun as the sum of the terms, that due to its daily rotation about its axis, and that due to its yearly revolution about the Sun. [Assume the Mars is a uniform sphere with mass = 6.4×1023 kg , radius = 3.4×106 m , rotation period 24.7 h , orbital period 686 d and is 2.3×108 km from the Sun.] Express your answer to two significant figures and include the appropriate units. (Kdaily+Kyearly=?)arrow_forwardThe escape velocity is defined to be the minimum speed with which an object of mass m must move to escape from the gravitational attraction of a much larger body, such as a planet of total mass M. The escape velocity is a function of the distance of the object from the center of the planet R, but unless otherwise specified this distance is taken to be the radius of the planet because it addresses the question "How fast does my rocket have to go to escape from the surface of the planet?" The key to making a concise mathematical definition of escape velocity is to consider the energy. If an object is launched at its escape velocity, what is the total mechanical energy Etotal of the object at a very large (i.e., infinite) distance from the planet? Follow the usual convention and take the gravitational potential energy to be zero at very large distances. ► View Available Hint(s) Etotal = Submit Part B Consider the motion of an object between a point close to the planet and a point very…arrow_forwardA satellite is in an elliptic orbit around the earth. Its sped at perigee A is 8650 m/s. Use conservation of energy to determine the speed at the apogee C. Radius of earth is 6380 km. Chapter 8 question 99 page 212 figure 8-46 in Giancoli Physics 4th editionarrow_forward
- (b) 0.8 m. If the edge length is reduced to 0.2 m, determine the change in gravitational potential energy of the four-particle system. Four particles, each of mass 1.2 kg, are at the corners of a square of edge lengtharrow_forwardA system consists of N identical particles of mass m placed rigidly on the vertices of a regular polygon with each side of length l. If K₁ be the kinetic energy imparted to one of the particles so that it just escapes the gravitational pull of the system and thereafter kinetic energy K₂ is given by to the adjacent particle to escape, then the difference (K₁-K₂) isarrow_forward(c) A small object was found to drop above the surface of a big planet with no initial velocity and it fell 13.5 m in 3 s. If the radius of the planet is 5.82 x 10° m, calculate the small object's acceleration during the fall and the mass of the big planet.arrow_forward
- Planet Roton, with a mass of 7.0 * 10^24 kg and a radius of 1600 km, gravitationally attracts a meteorite that is initially at rest relative to the planet, at a distance great enough to take as infinite.The meteorite falls toward the planet. Assuming the planet is airless, find the speed of the meteorite when it reaches the planet’s surface.arrow_forwardConsider a distant planet that has twice the mass and twice the radius of the Earth.Is the escape speed on this planet greater than, less than, or equal to the escape speedon the Earth? Explainarrow_forwardc) i) Relative to the sun, calculate the minimum speed for a spacecraft to escape the solar system if it starts at the Earth’s orbit.(Given M sun = 1.989 x 10 ^39 kg, distance from Earth to Sun = 1.5 x 10^11 km) ii) Voyager 1 achieved a maximum speed of 125000 km/h on its way to photograph Jupiter. Calculate the distance from the Sun for this speed sufficient to escape the solar system.arrow_forward
- Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningCollege PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningUniversity Physics Volume 1PhysicsISBN:9781938168277Author:William Moebs, Samuel J. Ling, Jeff SannyPublisher:OpenStax - Rice University
- Classical Dynamics of Particles and SystemsPhysicsISBN:9780534408961Author:Stephen T. Thornton, Jerry B. MarionPublisher:Cengage Learning
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