This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: GES100 HW2 (Chaps. 1,2,4) SOLUTIONS Chap 1, Exercise 11 : The system is in equilibrium , meaning that the net force must be zero. Since the net upwards force is 200N+200N = 400N, we know that the net downward force must also be 400N. Since the persons weight is given as 250N, then the staging must weigh: 400N 250N = 150N. Chap. 1 Exercise 12 : We again note that the system is in equilibrium , meaning that the net force must be zero. The net downwards force is 250N + 300N + 300N = 850N. Thus the net upward force must also equal 850N. Since the tension on the left rope is given as 400N, the tension on the right rope must be 850N400N = 450N. Thus the right scale would read 450N. Chap. 1 Exercise 20: The problem tells us that the speed is increasing, therefore the crate is accelerating , meaning there must be a net force greater than zero. Thus the force of your push must be greater than the force of friction....
View Full
Document
 Fall '07
 Pinter

Click to edit the document details