Question

a paritcle is acted upon by two mutually perpendicular forces of 3N and 4N .in order that the particle remains stationary the magnitude of the third force that should be applied is​

Answer 1

Explanation:

the force=3i+4j

$f = \sqrt{ {3}^{2} + {4}^{2} }$

$f = \sqrt{ {5}^{2} } = 5 \: newton$

Answer 2

Answer:

5

Explanation:

√(3²+4²) is the magnitude of the force.