Two tow trucks try to pull a car out of a ditch. one tow truck applies a force of 1,500 pounds while the other truck applies a force of 2,000 pounds. the resultant force is 3,000 pounds. find the angle between the two applied forces rounded to the nearest degree.
Can someone please help me with this question? I have the answer to this question, but I don't know how to get it.
Thanks in advance.
2007-02-07 07:27:13 · 5 answers · asked by Maria 5 in Education & Reference ➔ Homework Help
No you guys don't understand, this is a physics question...but in math. It was on a state test and now it's my homework...it's possible, but I don't get it.
2007-02-07 07:41:57 · update #1
the answer is:
Not enough information
it impossible beccause you do not know the maximum of the two forces
2007-02-07 07:36:20 · answer #1 · answered by Mr. E 3 · 0⤊ 0⤋
Hi. What you should do (like always) is draw the force vectors coming from the truck. Do this at some angle. The two vectors add to form a parallellogram (and all four sides are known). And the connection from one side to the other has the value 3000.
You can find angles if you know all the values of the sides of a triangle like in his case. Use the cosine rule:
a^2 = b^2 + c^2 - 2bc cos A
cos A = (b^2 + c^2 - a^2) /2bc
cos A = (3^2 + 2^2 -1.5^2)/2x3x2 = 0.8958
A = 26.36 deg
other angle part...
...
cos B = (1.5^2 + 3^2 -2^2)/2x1.5x3 = 0.806
B = 36.34 deg
angle = A+B = 64.7 = 65 deg
2007-02-07 15:58:38 · answer #2 · answered by Peter R 2 · 3⤊ 0⤋
stop cheating you idiot...i used to do the same ****...post hard hw questions on yahoo answers
2007-02-07 21:11:31 · answer #3 · answered by Anonymous · 0⤊ 0⤋
u need one more given
2007-02-07 15:48:58 · answer #4 · answered by Ceaser 2 · 0⤊ 0⤋
um....
2007-02-07 15:30:16 · answer #5 · answered by Anonymous · 0⤊ 1⤋