- #1

- 13

- 5

- Homework Statement:
- I came across this question in my textbook

- Relevant Equations:
- Power=Work/Time=Force×Velocity

I tried to solve it by integrating force from 0 to L

**dF=dm.g**

where dm=λdx

And then I multiplied it with velocity to get power because velocity is constantwhere dm=λdx

And then I multiplied it with velocity to get power because velocity is constant

But the book used integration to find work done and divided it by time for power

My answer was

Giving (Option C) as answer

Where am I wrong?

Thanks for the help
*∫(vdF)=v ∫(dF)*But the book used integration to find work done and divided it by time for power

My answer was

**λlgv(Option B)**Giving (Option C) as answer

Where am I wrong?

Thanks for the help