# PHYSICS. HELP!

posted by .

I've been stuck on this physics homework since I got home. I think the main issue I don't get is finding the components, and adding them to find the resultant force or velocity. Here's one problem.

Three forces act on a point concurrently. Force a is 80N at 220 degrees, force b is 70N at 90 degrees, and force c is 70N at 0 degrees. Find the resultant force and equilibrant force.

• PHYSICS. HELP! -

x components:
80 cos 220 = -61.3
70 cos 90 = 0
70 cos 0 = 70
total x = 8.72
y components
80 sin 220 = -51.4
70 sin 90 = 70
70 sin 0 = 0
total y = 18.6
so magnitude resultant = sqrt (18.6^2 +8.72^2) = 20.2 Newtons
direction
cos angle = 8.72/20.2
angle = 64.4 degrees

The equilibrant is equal in magnitude and at 64.4+180 = 244.4 degrees

• PHYSICS. HELP! -

Equilibrant =0

• PHYSICS. HELP! -

quation of physics

## Similar Questions

1. ### physics

find the average of a block being propelled propelled by an elastic band. We know it is uniform acceleration. my attempt on this problem Measure the force applied of elastic band with a newton scale. The more you strecth the farther …
2. ### Physics

I am stuck on a question that asks for the resultant force(magnitude + direction) question says : A rope is strung between a car and Joe, the car pulls on the rope with a force of 20,000 newton. joe pulls the rope with a force of 25,000N. …

I am stuck on a question that asks for the resultant force(magnitude + direction) question says : A rope is strung between a car and Joe, the car pulls on the rope with a force of 20,000 newton. joe pulls the rope with a force of 25,000N. …
4. ### Calculus - average velocity

*VELOCITY OF A CAR* Suppose the distance s (in feet) covered by a car moving along a straight road after t sec is given by the function s = f(t) = 2t^2 + 48t. a. Calculate the average velocity of the car over the time intervals [20,21], …
5. ### physics-mechanics

a ball, m1, is held in place, 30 degrees from the roof it is connected to, from m1 hangs a 2nd ball m2, 1 pendulum connected to another pendulum. what is the acceleration of the 2nd ball, m2, the moment m1 is released?

I need help bad i been doing this homework since i got home at 4:00 and am stuck on this problem. X -1 : X-2 =sum (x+1)+(x-2)=(x+x+1-2) diff (x+1)-(x-2)=(x-x-1-2) Product (x-1)(x-2)=(x^2-1)
7. ### Physics

A 100 lb block of ice slides down an incline 5.0 ft long and 3.0 ft high. A worker pushes up on the ice parallel to the incline so that it slides down at constant speed. The coefficient of friction between the ice and the incline is …
8. ### Physics

A 100 lb block of ice slides down an incline 5.0 ft long and 3.0 ft high. A worker pushes up on the ice parallel to the incline so that it slides down at constant speed. The coefficient of friction between the ice and the incline is …
9. ### Physics

A 100 lb block of ice slides down an incline 5.0 ft long and 3.0 ft high. A worker pushes up on the ice parallel to the incline so that it slides down at constant speed. The coefficient of friction between the ice and the incline is …
10. ### Physics

Please help me with this its very hard to visualize the problem. The analytical method of adding vectors expressed in terms of their components may be applied to vectors in three dimensions, for which graphical work is inconvenient. …

More Similar Questions