1203_chap19

# 1203_chap19 - ME240 Agenda:...

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d ME 240 Agenda: 19.1 Work and Energy in Rigid Body Dynamics 19.2 Impulse and Momentum Ch. 19 Problems – due Monday HW: 19.31, 19.40 Supplemental: 19.34, 19.36

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Charpy Impact Test assesses the fracture toughness of a material by measuring the energy required to break a sample specimen. This is done by releasing a heavy pendulum from st an angle nd measuring the swing angle ached rest an angle i and measuring the swing angle f reached after the specimen is broke. Striker S consists of a uniform disk of mass m S =19.5 kg and dius =150 mm. radius r S 150 mm. Arm is a thin rod of mass m A =2.5 kg and length L A =0.8 m. Determine the fracture energy in an experiment where =158° and =43° i f Charpy Test classic , modern 7 23
Double pulley D has m=15 kg and radius of gyration k=10 cm, outer radius r o =15cm, r i =7.5cm. Crate C has mass m=20kg. Pulley P has negligible mass. Determine the speed of the crate C and the angular velocity of the pulley D after the crate has dropped from rest a distance h=2m .

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## This note was uploaded on 02/07/2011 for the course M E 240 taught by Professor Staff during the Spring '08 term at Wisconsin.

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1203_chap19 - ME240 Agenda:...

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