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Unformatted text preview: A and released from rest. The next time it is at that location, momentarily at rest, an identical block is gently placed at rest on top of it. There is static friction between the blocks, with coefFcient s . a. Which of these quantities is changed by the addition of the new block (assuming s is large enough to keep the blocks together)? Amplitude, angular frequency, total energy. b. Give the old and new values of the one(s) that changed. c. How large must s be for the blocks to stay together? a. Angular frequency (only). b. = k / m , = k /2 m . c. The maximum acceleration of the spring system is 2 A . The maximum that friction can provide the upper block is s g , so we must have s 2 A / g . Physics 53 Summer 2010 2...
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This note was uploaded on 10/19/2011 for the course PHYSICS 53L taught by Professor Mueller during the Spring '07 term at Duke.
- Spring '07