Homework Help: math/physics

Posted by Cydni on Tuesday, April 10, 2012 at 5:08pm.

Forces with magnitudes of 2000 newtons and 900 newtons act on the machine part at angles of 30 degrees and -45 degrees respectively, with the x-axis. Find the direction and magnitude of the resultant of these forces.

math/physics - Reiny, Tuesday, April 10, 2012 at 6:00pm
I see two vectors forming an angle of 75°
Draw the usual parallelogram with the resultant as the diagonal of that parallelogram.

R^2 = 900^2 + 2000^2 - 2(900)(2000)cos 105°
R = 2396
that's your magnitude
Now use the sine law to find the direction angle.

Answer this Question

Related Questions

PHYSICS - add these two forces a. 200 newtons @ 20 degrees N of E B. 200 Newtons...
Math - Three forces with magnitudes of 70 pounds, 40 pounds, and 60 pounds act ...
physics - three forces act on a ring. The net force on the ring is zero. One ...
physics - three forces act on a ring. The net force on the ring is zero. One ...
physics - three forces act on a ring. The net force on the ring is zero. One ...
physics - three forces act on a ring. The net force on the ring is zero. One ...
physics - Two concurrent forces have a maximum resultant of 45 newtons and a ...
physics - Forces of 20 N at 80 degrees, and 50 N at an angle of 210 degrees, ...
Physics 1 - Forces of 20 N at 80 degrees, and 50 N at an angle of 210 degrees, ...
Physics - If five forces act towards the same point on a body at angles of 60, ...

For Further Reading

First Name:
School Subject:
Answer: