Answer to Question #149441 in Physics for Awele P

Question

A force of 200n is inclined at an angle of 120° to another force P. The angle between the 200n force and the resultant force is 50°. Find the magnitude of the force P and the resultant of the two force.

Answer 1

It is very easy to solve this problem graphically. All you need is a ruler and protractor. Assume 200 N force is 20 cm and count 120° from the vertical. Draw it. Then count 50°from this 20-cm force and draw the resultant. In this example, the resultant force was obtained by the parallelogram addition law. So, measure the length of the other force and resultant, you will get 180 N for the resultant and 155 N for the second force.