12/2/2018 Class Performance A:[85-100] B:[75-84] C:[65-74] D:[55-64]

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12/2/2018 Class Performance A:[85-100] B:[75-84] C:[65-74] D:[55-64]

Chapter 5: Motion Along a Line Dynamic equilibrium Static equilibrium T1=100 N, T2=200 N, Find direction and magnitude of T3 Find T if angle of inclination is 20o

Weight The weight of an object is the force of gravity on that object If you are hanging from a rope, your sensation of weight is due to the tension force pulling up on you Is weight absolute? What is your weight in a free fall?

Measuring instruments for weight

Apparent weight Weight of a person in a “moving elevator” will not be the same as his weight at “rest”