A force of $5\, N$, making an angle $\theta $ with the horizontal, acting on an object displaces it by $0.4\,m$ along the horizontal direction. If the object gains kinetic energy of $1\,J$, the horizontal component of the force is......$N$
$1.5$
$2.5$
$3.5$
$4.5$
A force of $5\, N$, making an angle $\theta $ with the horizontal, acting on an object displaces it by $0.4\,m$ along the horizontal direction. If the object gains kinetic energy of $1\,J$, the horizontal component of the force is......$N$
Work done on the body = K.E. gained by the body
$FS\cos \theta = 1\;Joule$$⇒$$F\cos \theta $$ = \frac{1}{s} = \frac{1}{{0.4}} = 2.5N$
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