You hang a heavy ball with a mass of 36 kg from a chromium rod 2.6 m long by 2.2

Question

You hang a heavy ball with a mass of 36 kg from a chromium rod 2.6 m long by 2.2 mm by 3.1 mm. You measure the stretch of the rod, and find that the rod stretched 0.000542 m. Using these experimental data, what value of Young's modulus do you get?
Y = N/m2. The atomic mass of chromium is 52 g/mole, and the density of chromium is 7.1 g/cm3. Using this information along with the measured value of Young's modulus, calculate the speed of sound in chromium.
v = m/s. Using these experimental data, what value of Young's modulus do you get?
Y = N/m2. Using this information along with the measured value of Young's modulus, calculate the speed of sound in chromium.
v = m/s.

Explanation / Answer

Y=fl/(al)=(36*9.8)(2.6)/((2.2*3.1*10^(-6))(.000542)=4.34*10^11

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