Two forces act at right angles at a point on a body. one of the forces is 120 lb. and the other is 160 lb. find the magnitude of the resultant of the two forces.

The answer is: The resultant force is equal to 200 lb.

From the statement, we know that both forces are acting at right angles, meaning that there is a vertical force and a horizontal force.

We can solve this problem using the Pythagorean Theorem, which states that:

Let be:

a, the horizontal force (x)

b, the vertical force (y)

c, the resultant force (r)

So, assuming that:

Calculating the resultant force, we have:

Hence, the resultant force is equal to 200 lb.

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