Find the number of cycles after which the motion ceases

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Reference no: EM131146327

The Charpy impact test is a dynamic test in which a specimen is struck and broken by a pendulum (or hammer) and the energy absorbed in breaking the specimen is measured. The energy values serve as a useful guide for comparing the impact strengths of different materials. As shown in Fig. 2.115, the pendulum is suspended from a shaft, is released from a particular position, and is allowed to fall and break the specimen. If the pendulum is made to oscillate freely (with no specimen), find

(a) an expression for the decrease in the angle of swing for each cycle caused by friction,

(b) the solution for if the pendulum is released from an angle and

(c) the number of cycles after which the motion ceases. Assume the mass of the pendulum is m and the coefficient of friction between the shaft and the bearing of the pendulum is µ.

Reference no: EM131146327

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