PHY 1151

Fall 2002

First Hour Exam -- version 1

September 20, 2002

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Rx = Ax + Bx + Cx

Rx = 3 + 5 + 7

Rx = 15

Ry = Ay + By + Cy

Ry = - 4 - 6 + 8

Ry = - 2


Please notice that Question 3 is very similar to "Another Example" from the notes and discussion of Projectile Motion.


First, we apply F = m a to the 5-kg mass:

To get that "more information", we apply F = m a to the 2-kg block on the inclined plane:

a = 6.04 m/s2

T = 6.70 N + (2 kg)(6.04 m/s2)

T = 6.70 N + 12.08 N

T = 18.78 N


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