A constant force vecF is acting on a body of mass m makes it move with constant velocity vecv as shown in the figure. The power P exerted is

Question

A constant force vecF is acting on a body of mass m makes it move with constant velocity vecv as shown in the figure. The power P exerted is (A) F cos θ v (B) (F cos θ/m g) (C) (F m g cos θ/v) (D) (m g sin θ/F)

Tardigrade Admin · Accepted Answer

<img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/physics/a85e5234393e2d453522bb520ef7a44e-.png" /> Power =( component of force in the direction of velocity )| vecv| =F cos θ v

Q. A constant force $F$ is acting on a body of mass $m$ makes it move with constant velocity $v$ as shown in the figure. The power $P$ exerted is

$F cos θ v$

$\frac{F c o s θ}{m g}$

$\frac{F m g c o s θ}{v}$

$\frac{m g s i n θ}{F}$

Power =( component of force in the direction of velocity $) ∣ v ∣$
$= F cos θ v$

Q. A constant force F is acting on a body of mass m makes it move with constant velocity v as shown in the figure. The power P exerted is

Fcosθv

mgFcosθ​

vFmgcosθ​

Fmgsinθ​