sol3 - HW Solutions 3 - 8.01 MIT - Prof. Kowalski Topics:...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: HW Solutions 3 - 8.01 MIT - Prof. Kowalski Topics: circular and relative motion and Newtons first two laws. 1) 4.4 Please refer to figure 4.26 p.148. This is just a vector algebra problem and the problem is not inter- ested in dynamics. The vector here is the force! a) F x = F cos where is the angle that the rope makes with the ramp ( = 30 o in this problem),so F = | F | = F x cos = 60 cos 30 = 69 . 3 N. b) F y = F sin = F x tan = 34 . 6 N. c) The problem in part a and b is not interested in the force along or perpendicular to the ground. So, as long as we dont change the angle with respect to the ramp the answer to part a and b would not change. d) F makes an angle 50 o with respect to ground so the F gx and F gy is derived from: F gx = F cos g = 69 . 3 cos 50 o = 53 . 1 N. F gy = F sin g = 69 . 3 sin 50 o = 44 . 5 N. 1 2) 4.30 a) v ave between two points , e.g. f and i, for a constant acceleration is v ave = v f + v i 2 . Here v f = 0...
View Full Document

This note was uploaded on 04/22/2011 for the course PHYS 1441 taught by Professor White during the Spring '08 term at UT Arlington.

Page1 / 7

sol3 - HW Solutions 3 - 8.01 MIT - Prof. Kowalski Topics:...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online