Physics for Scientists and Engineers with Modern Physics, Technology Update
9th Edition
ISBN: 9781305401969
Author: SERWAY, Raymond A.; Jewett, John W.
Publisher: Cengage Learning
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Chapter 17, Problem 57AP
To determine
Is it reasonable to think that half of the mechanical energy of the two glide system is transferred as sound to the environment.
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A 10.0- g bullet is fired into, and embeds itself in, a 2.00- kg block attached to a spring with a force constant of 19.6 N/m and having negligible mass. How far is the spring compressed if the bullet has a speed of 300. m/s just before it strikes the block and the block slides on a frictionless surface? Note: You must use conservation of momentum in this problem because of the inelastic collision between the bullet and block.
We’ve seen that stout tendons in the legs of hopping kangaroos store energy. When a kangaroo lands, much of the kinetic energy of motion is converted to elastic energy as the tendons stretch, returning to kinetic energy when the kangaroo again leaves the ground. If a hopping kangaroo increases its speed, it spends more time in the air with each bounce, but the contacttime with the ground stays approximately the same. Explain why you would expect this to be the case.
a. A 1kg block is held in place on a vertical compressed spring. How far must the spring be compressed so that the box will just leave the spring when released if the spring has a coefficient of 300 N/m?
b. At a smaller compression the block bounces on the spring instead of leaving it, find the frequency it bounces at.
Chapter 17 Solutions
Physics for Scientists and Engineers with Modern Physics, Technology Update
Ch. 17.1 - If you blow across the top of an empty soft-drink...Ch. 17.3 - A vibrating guitar string makes very little sound...Ch. 17.3 - Increasing the intensity of a sound by a factor of...Ch. 17.4 - Consider detectors of water waves at three...Ch. 17.4 - You stand on a platform at a train station and...Ch. 17.4 - An airplane flying with a constant velocity moves...Ch. 17 - Prob. 1OQCh. 17 - Prob. 2OQCh. 17 - Prob. 3OQCh. 17 - What happens to a sound wave as it travels from...
Ch. 17 - Prob. 5OQCh. 17 - Prob. 6OQCh. 17 - Prob. 7OQCh. 17 - Prob. 8OQCh. 17 - Prob. 9OQCh. 17 - Prob. 10OQCh. 17 - Prob. 11OQCh. 17 - Prob. 12OQCh. 17 - Prob. 13OQCh. 17 - Prob. 14OQCh. 17 - Prob. 1CQCh. 17 - Prob. 2CQCh. 17 - Prob. 3CQCh. 17 - Prob. 4CQCh. 17 - Prob. 5CQCh. 17 - Prob. 6CQCh. 17 - Prob. 7CQCh. 17 - Prob. 8CQCh. 17 - Prob. 9CQCh. 17 - Prob. 1PCh. 17 - Prob. 2PCh. 17 - Write an expression that describes the pressure...Ch. 17 - Prob. 4PCh. 17 - Prob. 5PCh. 17 - Prob. 6PCh. 17 - Prob. 7PCh. 17 - Prob. 8PCh. 17 - Prob. 9PCh. 17 - Prob. 10PCh. 17 - Prob. 11PCh. 17 - Prob. 12PCh. 17 - Prob. 13PCh. 17 - Prob. 14PCh. 17 - Prob. 15PCh. 17 - Prob. 16PCh. 17 - Prob. 17PCh. 17 - Prob. 18PCh. 17 - Prob. 19PCh. 17 - Prob. 20PCh. 17 - The intensity of a sound wave at a fixed distance...Ch. 17 - Prob. 22PCh. 17 - Prob. 23PCh. 17 - Prob. 24PCh. 17 - The power output of a certain public-address...Ch. 17 - Prob. 26PCh. 17 - Prob. 27PCh. 17 - Prob. 28PCh. 17 - Prob. 29PCh. 17 - Prob. 30PCh. 17 - Prob. 31PCh. 17 - Prob. 32PCh. 17 - Prob. 33PCh. 17 - A fireworks rocket explodes at a height of 100 m...Ch. 17 - Prob. 35PCh. 17 - Prob. 36PCh. 17 - Prob. 37PCh. 17 - Prob. 38PCh. 17 - Prob. 39PCh. 17 - Prob. 40PCh. 17 - Prob. 41PCh. 17 - Prob. 42PCh. 17 - Prob. 43PCh. 17 - Prob. 44PCh. 17 - Prob. 45PCh. 17 - Prob. 46PCh. 17 - Prob. 47PCh. 17 - Prob. 48APCh. 17 - Prob. 49APCh. 17 - Prob. 50APCh. 17 - Prob. 51APCh. 17 - Prob. 52APCh. 17 - Prob. 53APCh. 17 - A train whistle (f = 400 Hz) sounds higher or...Ch. 17 - Prob. 55APCh. 17 - Prob. 56APCh. 17 - Prob. 57APCh. 17 - Prob. 58APCh. 17 - Prob. 59APCh. 17 - Prob. 60APCh. 17 - Prob. 61APCh. 17 - Prob. 62APCh. 17 - Prob. 63APCh. 17 - Prob. 64APCh. 17 - Prob. 65APCh. 17 - Prob. 66APCh. 17 - Prob. 67APCh. 17 - Prob. 68APCh. 17 - Prob. 69APCh. 17 - Prob. 70APCh. 17 - Prob. 71CPCh. 17 - Prob. 72CPCh. 17 - Prob. 73CP
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- An object of mass m1 = 9.00 kg is in equilibrium when connected to a light spring of constant k = 100 N/m that is fastened to a wall as shown in Figure P12.67a. A second object, m2 = 7.00 kg, is slowly pushed up against m1, compressing the spring by the amount A = 0.200 m (see Fig. P12.67b). The system is then released, and both objects start moving to the right on the frictionless surface. (a) When m1 reaches the equilibrium point, m2 loses contact with m1 (see Fig. P12.67c) and moves to the right with speed v. Determine the value of v. (b) How far apart are the objects when the spring is fully stretched for the first time (the distance D in Fig. P12.67d)? Figure P12.67arrow_forwardA lightweight spring with spring constant k = 225 N/m is attached to a block of mass m1 = 4.50 kg on a frictionless, horizontal table. The blockspring system is initially in the equilibrium configuration. A second block of mass m2 = 3.00 kg is then pushed against the first block, compressing the spring by x = 15.0 cm as in Figure P16.77A. When the force on the second block is removed, the spring pushes both blocks to the right. The block m2 loses contact with the springblock 1 system when the blocks reach the equilibrium configuration of the spring (Fig. P16.77B). a. What is the subsequent speed of block 2? b. Compare the speed of block 1 when it again passes through the equilibrium position with the speed of block 2 found in part (a). 77. (a) The energy of the system initially is entirely potential energy. E0=U0=12kymax2=12(225N/m)(0.150m)2=2.53J At the equilibrium position, the total energy is the total kinetic energy of both blocks: 12(m1+m2)v2=12(4.50kg+3.00kg)v2=(3.75kg)v2=2.53J Therefore, the speed of each block is v=2.53J3.75kg=0.822m/s (b) Once the second block loses contact, the first block is moving at the speed found in part (a) at the equilibrium position. The energy 01 this spring-block 1 system is conserved, so when it returns to the equilibrium position, it will be traveling at the same speed in the opposite direction, or v=0.822m/s. FIGURE P16.77arrow_forwardA light, cubical container of volume a3 is initially filled with a liquid of mass density as shown in Figure P15.5la. The cube is initially supported by a light string to form a simple pendulum of length Li, measured from the center of mass of the filled container, where Li a. The liquid is allowed to flow from the bottom of the container at a constant rate (dM/dt). At any time t, the level of the liquid in the container is h and the length of the pendulum is L. (measured relative to the instantaneous center of mass) as shown in Figure P15.51b. (a) Find the period of the pendulum as a function of time. (b) What is the period of the pendulum after the liquid completely runs out of the container? Figure P15.51arrow_forward
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