apply parallelogram method
fx=30N fr=?
fy=20N theta=?
To apply the parallelogram method to find the unknowns, fr (resultant force) and theta (angle), we can break down the given forces into their components along the x-axis and y-axis. Let's begin with the given forces, fx = 30 N and fy = 20 N.
Step 1: Resolve fx and fy into their components:
The x-component (fx) represents the force along the x-axis, and the y-component (fy) represents the force along the y-axis.
fx = 30 N (force along x-axis)
fy = 20 N (force along y-axis)
Step 2: Draw a parallelogram using the given forces.
Draw a parallelogram with one side representing fx and the other side representing fy. The resultant force, fr, is the diagonal of the parallelogram.
Step 3: Measure the length of the resultant force fr.
Measure the length of the diagonal line, representing the resultant force fr using a ruler or any other measuring device. This will give you the magnitude of the resultant force.
Step 4: Determine the direction of the resultant force theta.
To find theta, measure the angle between the x-axis and the diagonal fr using a protractor or any other angle measuring tool. Make sure to measure the angle in the counterclockwise (anticlockwise) direction from the positive x-axis.
Once you have measured the angle and the magnitude of the resultant force fr, you will have the values for fr and theta.