A recently patented pile driver pounds piles into the ground by launching 15 kg bowling balls from a spring loaded gun, up around a frictionless loop-de-loop of radius r= 8 m, and down onto the pile. When the spring is compressed by As = 2 m, the bowling balls have a speed of 20 m/s at the top of the loop, as shown. (You may assume g = 10 m/s².) v= 20 m/s T=8 m k=? As 2 m Find the spring constant of the gun. pile A) Zero B) 100 N/m C) 2700 N/m D) 150 N/m E) 1300 N/m O A O E

College Physics
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ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
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Chapter1: Units, Trigonometry. And Vectors
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A recently patented pile driver pounds
piles into the ground by launching 15 kg
bowling balls from a spring loaded gun, up
around a frictionless loop-de-loop of radius
r= 8 m, and down onto the pile. When the
spring is compressed by As = 2 m, the
bowling balls have a speed of 20 m/s at the
top of the loop, as shown. (You may
v = 20 m/s
r=8 m
assume g = 10 m/s².)
k ?
As = 2 m
Find the spring constant of the gun.
pile
A) Zero B) 100 N/m
C) 2700 N/m
D) 150 N/m
E) 1300 N/m
O A
O B
O D
O E
Transcribed Image Text:A recently patented pile driver pounds piles into the ground by launching 15 kg bowling balls from a spring loaded gun, up around a frictionless loop-de-loop of radius r= 8 m, and down onto the pile. When the spring is compressed by As = 2 m, the bowling balls have a speed of 20 m/s at the top of the loop, as shown. (You may v = 20 m/s r=8 m assume g = 10 m/s².) k ? As = 2 m Find the spring constant of the gun. pile A) Zero B) 100 N/m C) 2700 N/m D) 150 N/m E) 1300 N/m O A O B O D O E
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