10th Edition

ISBN: 9781119500100

Author: Halliday

Publisher: MCGRAW-HILL HIGHER EDUCATION

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Chapter 5, Problem 62P

In shot putting, many athletes elect to launch the shot at an angle that is smaller than the theoretical one (about 42°) at which the distance of a projected ball at the same speed and height is greatest. One reason has to do with the speed the athlete can give the shot during the acceleration phase of the throw. Assume that a 7.260 kg shot is accelerated along a straight path of length 1.650 m by a constant applied force of magnitude 380.0 N, starting with an initial speed of 2.500 m/s (due to the athlete’s preliminary motion). What is the shot’s speed at the end of the acceleration phase if the angle between the path and the horizontal is (a) 30.00° and (b) 42.00°? (Hint: Treat the motion as though it were along a ramp at the given angle.) (c) By what percent is the launch speed decreased if the athlete increases the angle from 30.00° to 42.00°?

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Chapter 5 Solutions

FUND PHYS 10TH EXT WILEY PLUS

Ch. 5 - Figure 5-19 gives the free-body diagram for four...Ch. 5 - Two horizontal forces, F1=(3N)i (4N)jandF2=(1N)i...Ch. 5 - In Fig. 5-21, forces F1 and F2 are applied to a...Ch. 5 - At time t = 0, constant F begins to act on a rock...Ch. 5 - Figure 5-22 shows overhead views of four...Ch. 5 - Figure 5-23 shows the same breadbox in four...Ch. 5 - July 17, 1981, Kansas City: The newly opened Hyatt...Ch. 5 - Figure 5-25 gives three graphs of velocity...Ch. 5 - Figure 5-26 shows a train of four blocks being...Ch. 5 - Figure 5-27 shows three blocks being pushed across...

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