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Work, Energy and Power — Physics STD 11 — Question

Tamilnadu BoardEnglish MediumSTD 11PhysicsWork, Energy and Power1 Mark
MCQ
A box is dragged across a surface by a rope which makes an angle 45° with the horizontal. The tension in the rope is 100 N when the box is dragged 10 m. The work done is
  • ✓
    $\frac{1-e}{1+e}$
  • B
    $\frac{1+e}{e-1}$
  • C
    $(1+e)(1-e)$
  • D
    $\frac{e-1}{e+1}$
✓

Answer

Correct option: A.
$\frac{1-e}{1+e}$
$\frac{1-e}{1+e}$

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