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Question 1:
A phonograph turns recordings at A. 33 1/3 B. 45 C. 78 RPMs. What are the tangential speeds and the angular speeds at each of these RPMs?
Question 2:
A steel I-Beam is 5.0 m long at 20C. A. What is the change in length of the beam when the temperature rises to 40C ? B. What force would it exert on rigid support that prevented that expansion if the
cross sectional area = 60cm2? Alpha=12*10^-6
A phonograph turns recordings at A. 33 1/3 B. 45 C. 78 RPMs. What are the tangential speeds and the angular speeds at each of these RPMs?
Question 2:
A steel I-Beam is 5.0 m long at 20C. A. What is the change in length of the beam when the temperature rises to 40C ? B. What force would it exert on rigid support that prevented that expansion if the
cross sectional area = 60cm2? Alpha=12*10^-6