Question

give mi ans plzz with explained​

Answer 1

Answer:

2000J

Explanation:

F×s cos theta=work done

F=200N. As20kgwt=200N

200×20×cos60°=2000J

Answer 2

${\huge {\underline {\underline {\sf {\mathfrak{Answer}}}}}}$

${\underline {\underline {\rm {Given:}}}}$

• $Distance = 20 m$
• $Mass = 20 kg$
• $g = 10 m/s^2$
• $Angle \ of \ elevation = 60^0$

${\underline {\underline {\rm {Solution:}}}}$

$Force = mass × g$

$F = 20 × 10$

$F = 200 \ N$

${\underline {\underline {\rm {By \ formula :}}}}$

$Work \ done = F×s×cos \theta$

$Work \ done = 200 × 20 × cos60^0$

$Work \ done = 200 × 20 × \dfrac{1}{2}$

$Work \ done = 2000 \ J$