Processing Math: Done
To print higher-resolution math symbols, click the
Hi-Res Fonts for Printing button on the jsMath control panel.
No jsMath TeX fonts found -- using image fonts instead.
These may be slow and might not print well.
Use the jsMath control panel to get additional information.
jsMath Control PanelHide this Message

jsMath

Solution to Test Paper 3

From Mechanics

(Difference between revisions)
Jump to: navigation, search
Line 181: Line 181:
|}
|}
- 
-
AG: Answer Given in Question – Working must justify answer.
 

Revision as of 09:20, 8 April 2012

Solutions
1 (a) 0=245−98tt=98245=25 seconds (3 marks)


1 (b) 02=2452+2(−98)ss=2452298=30625 mORs=21(245+0)25=30625 m (3 marks)
1 (c) 61.25 m


(1 marks)
(7 marks)


2 (a) Image:test3ans1.gif (1 marks)


2 (b) T = 4900 N (1 marks)


2 (c) T−4900=50006T=300+4900=5200 N (3 mark)
3 (d) 4800−4900=500aa=500−100=−02 ms-202 ms−2downwards (4 mark)
(9 marks)


3 (a) R=598cos42=364 N (2 mark)


3 (b) F=04R=146 N (2 marks)


3 (c) 598sin42−146=5aa=51822=364 ms-2 (3 marks)


3 (d) 2=21364t2t=4364=105 seconds  (3 marks)


(10 marks)


4 (a) Qcos40=898sin40Q=cos40898sin40=658 N (3 mark)


4 (b) Qcos40+F=898sin40Qsin40+898cos40=RQcos40=898sin40 −03(Qsin40+898cos40)Q=cos40+03sin40898sin40−03898cos40 =338 N (5 marks)



(8 marks)


5 (a) v=(i+j)+(005i−01j)t


(2 marks)


5 (b) −(1+005t)=1−01t005t=2t=40 (4 marks)



(6 marks)


Retrieved from "http://wiki.math.se/wikis/2009/bridgecoursemechanics/index.php/Solution_to_Test_Paper_3"