Find work done by friction for displacement ' S ' ?

Question

Find work done by friction for displacement ' S ' ? (A) μ K ( mg + F sin θ) . S (B) -μ K ( mg + Fsin θ) . S (C) μK( mg - F sin θ) .S (D) -μ K ( mg - F sin θ) . S

Tardigrade Admin · Accepted Answer

N = M q + F sin θ <img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/physics/9e5b1b9fc9c3fa170d9f5f34a03d0833-.png" /> vec F textNet =μ k ( mg + F sin θ) =-μ k ( mg + F sin θ) S

Q. Find work done by friction for displacement ' $S$ ' ?

$μ_{K} (m g + F sin θ) . S$

$- μ_{K} (m g + F s in θ) . S$

$μ_{K} (m g - F sin θ) . S$

$- μ_{K} (m g - F sin θ) . S$

$N = Mq + F sin θ$

$F_{Net} = μ_{k} (m g + F sin θ)$
$= - μ_{k} (m g + F sin θ) S$

Q. Find work done by friction for displacement ' S ' ?

μK​(mg+Fsinθ).S

−μK​(mg+Fsinθ).S

μK​(mg−Fsinθ).S

−μK​(mg−Fsinθ).S