Question

The greatest and least resultant of two forces P and Q acting on a body are 35KN and 5KN respectively. Find the magnitude of the forces.

Answer 1

P-Q=5
P+Q=35
adding these we get
P=20KN
Q=15KN

Answer 2

let the magnitude of the firces are x and y.
so,
x+y=35
x-y=5
x=20
y=15
so the magnitudes if the forces are 20 KN and 15KN