PHY 1151

Fall 2002

First Hour Exam -- version 1

September 20, 2002

R

_{x}= A_{x}+ B_{x}+ C_{x}R

_{x}= 3 + 5 + 7R

_{x}= 15R

_{y}= A_{y}+ B_{y}+ C_{y}R

_{y}= - 4 - 6 + 8R

_{y}= - 2

Please notice that Question 3 is

very similarto "Another Example" from the notes and discussion ofProjectile Motion.

First, we apply

F= mato the 5-kg mass:To get that "more information", we apply

F= mato the 2-kg block on the inclined plane:a = 6.04 m/s

^{2}T = 6.70 N + (2 kg)(6.04 m/s

^{2})T = 6.70 N + 12.08 N

T = 18.78 N