Find the best answers to your questions at Westonci.ca, where experts and enthusiasts provide accurate, reliable information. Ask your questions and receive detailed answers from professionals with extensive experience in various fields. Experience the ease of finding precise answers to your questions from a knowledgeable community of experts.

Two forces act on an object as shown. Calculate the magnitude of the resultant force.[ Hint: Use the Pythagorean Theorem]

Two Forces Act On An Object As Shown Calculate The Magnitude Of The Resultant Force Hint Use The Pythagorean Theorem class=

Sagot :

Using law of vector addition , the magnitude (R) of resultant force is given by

[tex]\begin{gathered} R=\sqrt{30^2+40^2+2\times30\times40\sin90\degree;} \\ R=\text{ }\sqrt{4900}=\text{ 70N}\begin{cases}sin90\degree={1} \\ \end{cases} \end{gathered}[/tex]

Final answer is 70 N.

Note:- we need to use law of vector addition to get resultant of two forces but we cant use Pythagorean theorem for vector .