A 1500 rm kg wrecking ball hangs from a 20 rm m long cable., Ask an Expert

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Q1. A 1500 {rm kg} wrecking ball hangs from a 20 {rm m} long cable. The ball is pulled back until the cable makes the angle of 17.0^circ with vertical.

Q2. A 70kg mountain climber dangling in a crevasse stretches a 50-m-long, 1.0-cm-diameter rope by 8.0 cm. What is the Young's modulus of rope, in units of N/(m^2)?

Q3. If the speed of sound is 340m/s. What are the allowed frequencies and wavelength for standing sound waves in an unstopped (open on both ends) organ pip whose effective length is 1m?

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