Harold the hunter is a physics Harold the hunter is a physics Harold the hunter

Question

Harold the hunter is a physics Harold the hunter is a physics Harold the hunter is a physics Jump to... r is required for Sapling Assignments. Please visit this link for more information 8/2018 11:59 PM 544/1003/28/2018 11:35 AM Grade Print on 18 of 20 Sapling Learning Map da Harold the Hurler is a physics student who is renowned for his baseball pitching arm. In order to determine the amount of work he performs in throwing a baseball, Harold devises an experiment. He stands at the bottom of a deep pit and hurts a 0.147-kg baseball through an open third-floor window in a Harold's aim is so accurate that the ball then smoothly enters the tube of the Baseball Absorber invented and patented. In this device the ball compresses a spring until it comes momentarily to rest, and this maximum amount of compression is recorded as 0.421 m. The spring's force constant is 855 Nim, and the position of the baseball's momentary rest is 7.81 m above ground level. The point in the pit where the Hurler starts his pitch is 13.1 m below ground level. How much work does Harold perform on the baseball? Take g 9.80 m/s? Number O Previous 9 Check Answer 0 Next ?? Exit Hint MacBook Air

Explanation / Answer

Potential energy = mgh

P.E = 0.147*9.8* (7.81 + 13.1)

P.E = 30.123 J

P.E of the spring = 0.5kx2

P.E of the spring = 0.5 * 855 * 0.4212

P.E of the spring = 75.77 J

Total energy = 75.77 + 30.123

Total energy = 105.893 J

Therefore, W = Total energy = 105.893 Joules

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