Question

a constant force F = 3i+j–k N has a displacement r=2i+2j–3k meter in 2 seconds then calculate the power. ​

Answer 1

$\huge{ \underline{ \underline{ \green{ \sf{ Detailed \: Answer :}}}}}$

•To find : power

• Given : constant ,F = 3i+j–k and

r=2i+2j–3k , time = 2 seconds

we know that ,

${\purple{\boxed{\large{\bold{Power=\frac{Work\:Done}{Time }}}}}}$

work done = Force . Displacement

= ( 3i+j–k ).(2i+2j–3k )

= (6+2+3)J

=11J

∴power = work done /time

=11/2 W