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26 Nov 2019
17(4) . Prove that the slope of a string at any point xisnumerically equal to the ratio of the particl speed to thewavespeed at that point ? --> If I 'am not mistaken , y = ymsin ( k x - Ï t ) is theposition of point ' x .' Then , the slope , m = y ' = - Ïy mcos ( k x - Ï t ) is theparticle speed. The ' wave speed ' is v = ( F / μ )1/2 Or v = Ï / k . It 's from a physics book c 1974 .
17(4) . Prove that the slope of a string at any point xisnumerically equal to the ratio of the particl speed to thewavespeed at that point ?
--> If I 'am not mistaken , y = ymsin ( k x - Ï t ) is theposition of point ' x .'
Then , the slope , m = y ' = - Ïy mcos ( k x - Ï t ) is theparticle speed.
The ' wave speed ' is v = ( F / μ )1/2 Or v = Ï / k .
It 's from a physics book c 1974 .
