A boy pushes a toy box $2.0$ m along the floor by means of a force of $10$ N directed downward at an angle of $60^{\circ}$ to the horizontal. The work done by the boy is

6 J

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8 J

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10 J

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12 J

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Solution

The correct option is C 10 J
$W = F s c o s θ = 10 \times 2 c o s 60^{\circ} = 10 J$ .

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A boy pushes a toy box 2.0 m along the floor by means of a force of 10 N directed downward at an angle of 60∘ to the horizontal. The work done by the boy is

The correct option is C 10 JW=Fscosθ=10×2cos60∘=10J.

A boy pushes a toy box $2.0$ m along the floor by means of a force of $10$ N directed downward at an angle of $60^{\circ}$ to the horizontal. The work done by the boy is

The correct option is C 10 J
$W = F s c o s θ = 10 \times 2 c o s 60^{\circ} = 10 J$ .