If vec-F- and vec-S- are force and displacement respectively- the work done is zero ifvec-F- and vec-S- are opposite in directionvec-F- and vec-S- are in same directionvec-F- is greater than vec-S-vec-F- and vec-S- are mutually perendicular

Question

Toppr Admin · Accepted Answer

Work done is W-x2192-F-x2192-S-FS-xA0-cos-x3B8-x2234-W-0 if -xAF-F and -xAF-S are mutually perpendicular- Since cos900-0 So- W-0

If $\to F$ and $\to S$ are force and displacement respectively, the work done is zero if
$\to F$ and $\to S$ are opposite in direction
$\to F$ and $\to S$ are in same direction
$\to F$ is greater than $\to S$
$\to F$ and $\to S$ are mutually perendicular

Work done is $W = \to F . \to S = F S c o s θ$
$∴ W = 0$ if $¯ F$ and $¯ S$ are mutually perpendicular.
Since $c o s 90^{0} = 0$ So, $W = 0$

If →F and →S are force and displacement respectively, the work done is zero if→F and →S are opposite in direction→F and →S are in same direction→F is greater than →S→F and →S are mutually perendicular

Work done is W=→F.→S=FS cosθ∴W=0 if ¯F and ¯S are mutually perpendicular. Since cos900=0 So, W=0

If $\to F$ and $\to S$ are force and displacement respectively, the work done is zero if
$\to F$ and $\to S$ are opposite in direction
$\to F$ and $\to S$ are in same direction
$\to F$ is greater than $\to S$
$\to F$ and $\to S$ are mutually perendicular

Work done is $W = \to F . \to S = F S c o s θ$
$∴ W = 0$ if $¯ F$ and $¯ S$ are mutually perpendicular.
Since $c o s 90^{0} = 0$ So, $W = 0$