At what angle should the two forces 2p and

Asked by admin @ 16/08/2021 in Physics viewed by 292 People

the resultant of two forces 2P and √2P is √10P. The angle between the forces is......................................................................

Answered by admin @ 16/08/2021

Given forces are 2P and √2P.
Resultant=√10P.
That implies
√10P=√4P^2+2P^2-4√2P^2cosA
Squaring on both sides
We get,
10P^2=6P^2-4√2P^2cosA
4P^2=-4√2P^2cosA
4=-4√2cosA
-1/√2=cosA
A=135 degrees.
Therefore,
The angle between the forces is 135 degrees.

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