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TrojanPoem
 one year ago
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TrojanPoem
 one year ago
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This Question is Closed

TrojanPoem
 one year ago
Best ResponseYou've already chosen the best response.0dw:1444135482286:dw if F = 60 n, U = 300 n, theta = 40

TrojanPoem
 one year ago
Best ResponseYou've already chosen the best response.0V = 112.7 / 145.9 / 154.3 / 257.9 alpha = 131.4 / 98.6 / 41.4 / 115.2

dan815
 one year ago
Best ResponseYou've already chosen the best response.0whats with all the V and alpha

TrojanPoem
 one year ago
Best ResponseYou've already chosen the best response.0F is the resultat of both V, u

phi
 one year ago
Best ResponseYou've already chosen the best response.1I assume you are adding the vectors u and f, and the resultant is v ?

TrojanPoem
 one year ago
Best ResponseYou've already chosen the best response.0The action direction

phi
 one year ago
Best ResponseYou've already chosen the best response.1ok u + V= F dw:1444135779512:dw

phi
 one year ago
Best ResponseYou've already chosen the best response.1you could use Law of Cosines to find V and Law of Sines to find the supplementary angle

TrojanPoem
 one year ago
Best ResponseYou've already chosen the best response.0I tried 60 / Sin ( alpha + 40 ) = 300/ sin alpha = v / sin40 I ended up with tan alpha = 1.1

phi
 one year ago
Best ResponseYou've already chosen the best response.1law of cos gives 256.9 for  v

TrojanPoem
 one year ago
Best ResponseYou've already chosen the best response.0Oh, you used the force triangle for the cosine rule, I used Resultant = v^2 + u ^2 + 2 vu cos apha + theta

dan815
 one year ago
Best ResponseYou've already chosen the best response.0or just do vector addition since u are learning vectors

TrojanPoem
 one year ago
Best ResponseYou've already chosen the best response.0dw:1444136349451:dw Where is f ?

TrojanPoem
 one year ago
Best ResponseYou've already chosen the best response.0@phi, your method works , I will continue and see thanks.

dan815
 one year ago
Best ResponseYou've already chosen the best response.0u=<300,0> f=<60 cos(40),60 sin (40) v=<x,y> u+v=f 300+x= 60 cos(40) 0+y=60sin(40)

phi
 one year ago
Best ResponseYou've already chosen the best response.1alpha, by law of sins is 131.4 dw:1444136394450:dw

TrojanPoem
 one year ago
Best ResponseYou've already chosen the best response.0@dan815 , Never thought I could use vectors like this nice nice

dan815
 one year ago
Best ResponseYou've already chosen the best response.0ya vectors make it neat ^^

TrojanPoem
 one year ago
Best ResponseYou've already chosen the best response.0Thanks @phi, @dan815

phi
 one year ago
Best ResponseYou've already chosen the best response.1you can also you components. u+v= f so v= fu f=<300,0> (we let f point along the xaxis u= 60<cos 40, sin 40> v= <60 cos(40)  300, 60 sin(40) > now find the magnitude and angle of v v = 256.9 angle = atan(y/x) = 8.6 deg in the 3rd quadrant= 171.4 alpha = 171.440= 131.4 deg
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