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Introductory Physics Homework Help
How Does Trigonometry Determine the Height in a Ballistic Pendulum?
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[QUOTE="nathancurtis11, post: 4540801, member: 490638"] [h2]Homework Statement [/h2] Using trigonometry and Fig. 2 in the ballistic pendulum write-up, show that the height h the pendulum rises after capturing the ball is given by: h=R(1-cosθ) Figure two is here: [url]http://imgur.com/W9nvVZT[/url] [h2]Homework Equations[/h2] h=R(1-cosθ) [h2]The Attempt at a Solution[/h2] So in order for the height to increase I understand that R is the length of the pendulum. θ is the maximum deflection, so since R can't be negative that means cos(θ) must return a negative answer in order for the height to increase. So how do I prove that cos(θ) in this instance will be a negative number, thus making the height increase. [/QUOTE]
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How Does Trigonometry Determine the Height in a Ballistic Pendulum?
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