# POWER

Can Power ( in mechancs ) be negative?

Note by Amlan Mishra
4 years, 7 months ago

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@anirban ghosh P=F.v is not accurate formula if u don't consider a time dependent force although ur hypothesis isn't wrong

- 4 years, 6 months ago

What do u actually mean by "a time dependent force"???

- 4 years, 6 months ago

same thing as I was saying you. As power can be given by formula P=F.V I.E. SCALAR PRODUCT, angle between force and velocity can be 180, so power can be negative.

- 4 years, 7 months ago

yes,consider friction it reduces work doing tendency of a person and you can verify it mathematically

- 4 years, 7 months ago