Homework Help: Precalculus

Posted by Hanson on Tuesday, August 9, 2011 at 1:41am.

Okay I am soo confused with these two questions:

The resultant of two forces acting on a body has a magnitude of 80 pounds. The angles between the resultant and the forces are 20° and 52°. Find the magnitude of the larger force.

Without the wind, a plane would fly due east at a rate of 150 mph. The wind is blowing southeast at a rate of 50 mph. The wind is blowing at a 45° angle from due east. How far off of the due east path does the wind blow the plane?

for this i got 10.8 degrees?

Precalculus - bobpursley, Tuesday, August 9, 2011 at 7:35am
Mcos52+mcos20=80
Msin52+msin20=0
Solve for M.

second question

50cos45=windspeed south.
50sin45= windspeed east

plane vector: 150E+50sin45E +50cos45 S

so the angle is arc tan (35/(185))= 10.7 deg. check my math, I did most of it in my head.

Answer this Question

Related Questions

Precalculus - Okay I posted this before but I am still not sure. How would you ...
physics - Two forces acting on a body in opposite directions,have the resultant ...
Physics (please help) - A planet is in circular orbit about a remote star, far ...
AP Physics - While two forces act on it, a particle is to move at the constant ...
physics (work posted) - For a body to be in equilibrium under the combined ...
Physics - Only two horizontal forces act on a 9.1 kg body. One force is 5.3 N, ...
Algebra II - The resultant of two forces of 1120 N and 2210 N is 2870 N. What ...
physics - Find the magnitude and direction of a)the resultant b)the equilibrant ...
Physics - Multiple choice - An object is moving in a circle at a constant speed...
physical - Only two horizontal forces act on a 3.0 kg body that can move over a ...

For Further Reading

First Name:
School Subject:
Answer: