1. 12/2/2018
Class Performance
A:[85-100] B:[75-84] C:[65-74] D:[55-64]

2. 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

3. 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?

4. Measuring instruments for weight

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