Practice_Q8_2

# Practice_Q8_2 - can a 0.3 kg spear be throw with an atlatl...

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Practice Quiz 8 Physics 7B Winter 2010 Mar. 03, 2010 One of the major technological advances of early humans was the development of the atlatl, a device to assist throwing a flexible spear. Consider a person who has a 0.68 m moment arm when throwing a projectile. The atlatl will extend that moment arm by an additional 0.61 m. a) If a hunter and throw a 0.3 kg dart with a velocity of 40 m/s without assistance, how fast
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Unformatted text preview: can a 0.3 kg spear be throw with an atlatl? b) What is the angular momentum of the spear when it is thrown? c) If it takes 0.3 seconds to throw the spear, what is the specific angular impulse needed to throw the spear? d) How much torque is the thrower providing to launch the spear? This is equivalent to lifting what weight?...
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## This note was uploaded on 09/08/2010 for the course PHY 7B PHY7B taught by Professor Cebra during the Winter '10 term at UC Davis.

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