Question

If u are a true ace than solve this I will marks as brainliest . A uniform string of length 20m is suspended from a rigid support. A short wave pulse is introduced at its lowest end. It starts moving up the string. The time taken to reach the support is: (take g = 10 ms–2) b. If a curve y = f(x) passes through the point (1, –1) and satisfies the differential equation, y(1 + xy) dx = x dy, then f(-1/2) is equal to:

Answer 1

The tension in a string of linear mass density λ as a function of length x measured from the free end is Tx=λxg

The velocity of wave when it is at a position x is

vx=λTx=gx

dtdx=gx

T=∫0Lgxdx=g2L=22s

Hope it helps you

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