# Physics

Two dogs pull horizontally on ropes attached to a post; the angle between the ropes is 65.0. Dog exerts a force of 256 and dog exerts a force of 344 .

A) Find the magnitude of the resultant force.

B) Find the angle the resultant force makes with dog 's rope.

You can do this graphically, it is easy. Or use the law of cosines.

F^2= F1^2 + F2^2 -2F1*F2*cosTheta

Now for the angle, but you did not specify which dog's rope. Draw the diagram.

F1, then at the tip of F1, put F2. You should be able to find the angle between F1 and the third side by the law of sines.

Or graphically, you measure it.

Thank you .. I answered (A) and it's 508 N

but I didn't understand how to answer (B) could u please explain more ? ..

And quistion (B) required the angle between the resultant and dog A's rope ..

1. 👍 0
2. 👎 0
3. 👁 258
1. for B) arctan(y component/x component)

1. 👍 0
2. 👎 0
posted by John Doe
2. this foormula F^2= F1^2 + F2^2 -2F1*F2*cosTheta is wrong there is no minus in it.
thx

1. 👍 0
2. 👎 0
posted by eliel

## Similar Questions

1. ### Physics

Two dogs pull horizontally on ropes attached to a post; the angle problem 1 between the ropes is 60.0 degrees. If dog A exerts a force of 270N and dog B exerts a force of 300N find the magnitude of the resultant force and the

asked by Sarah on June 8, 2009
2. ### PHYSICS

Two dogs pull horizontally on ropes attached to a post; the angle between the ropes is 62.0∘. Dog A exerts a force of 270N , and dog B exerts a force of 302N . Find the magnitude of the resultant force. Find the angle the

3. ### Physics

Two dogs pull horizontally on ropes attached to a post; the angle between the ropes is 66.0∘. Dog A exerts a force of 278N , and dog B exerts a force of 324N . =Find the magnitude of the resultant force. =Find the angle the

asked by maria on March 9, 2014
4. ### physics

Two horses pull horizontally on ropes attached to a tree stump (Fig. 3). Each horse pulls with a force of magnitude F. If the angle between the two ropes is 126O, what is the resultant force?

asked by fiz on November 21, 2015
5. ### physics

Two dogs pull horizontally on ropes attached to a post; the angle between the ropes is 65.0ú. Dog " A" exerts a force of 256 N and dog " B " exerts a force of 344 N . I) Find the magnitude of the resultant force. ( Answered = 508

asked by kuwaiti on November 10, 2006
6. ### Physics

two dogs pull horizontally on ropes attached to a post; the angle between the rope is 70deg. dog A exerts a force of 268N and dog B exerts a force of 310N. find the magnitude of the resultant force. and the angle the resultant

asked by Anthony on September 20, 2011
7. ### Physics

two dogs pull horizontally on ropes attached to a post; the angle between the rope is 70deg. dog A exerts a force of 268N and dog B exerts a force of 310N. find the magnitude of the resultant force. and the angle the resultant

asked by Anthony on September 20, 2011
8. ### physics

Use a free body diagram to evaluate the situation. What is the tension in each of the ropes attached to the ceiling if the hanging mass is 0.55 kg? Two ropes are attached to the ceiling carrying the same box. One is tilted at a 30

asked by sea lively on October 17, 2018
9. ### physics

two boys trying to move a 200 kg cement block pull on two ropes attached to the block the tension in the ropes are 400N and 300N while the angle between them is 50°. sketch a vector triangle showing and naming the two forces

asked by nomfundo on February 19, 2014
10. ### Physics

A 40.0kg child is in a swing that is attached to ropes 2.00m long. Find the gravitational potential energy associated with the child relative to the child's lowest position under the following conditions: a) When the ropes are

asked by Robert on February 5, 2008

More Similar Questions