Question

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solve it
step by step explanation
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Answer 1

Explanation:

$\textcolor{red}{\text{Work}= \vec {F} \cdot \vec s} \:\text{where s=displacement}\\</p><p>\mathcal{(i)}Work=10 ×0.5=\boxed{5 J}\\</p><p>\mathcal{(ii)}\text{We take the component of force along displacement}\\</p><p>\mathrm{Work}=F \cos 60 \times 0.5\\</p><p>=10 \times \frac{1}{2}\times 0.5\\</p><p>=\boxed{2.5J}\\</p><p>\mathcal{(iii)} \text{Since Work}=\vec F \cdot \vec s,\\</p><p>\text{and F is perpendicular to s,}\\</p><p>Work=\boxed{0J}</p><p>$

Answer 2

Explanation:

You can also interchange F and D.

You should represent Dispacement by (d)