Work done:

$\overline{){\mathbf{w}}{\mathbf{=}}{\mathbf{F}}{\mathbf{\xb7}}{\mathbf{d}}{\mathbf{\xb7}}{\mathbf{cos\theta}}}$

Where θ is the angle between the Force and the direction of motion.

How much work is done by the boy pulling his sister d = 27.0 m in a wagon as shown in figure below? Assume no friction acts on the wagon and he pulls with a force of 62.0 N and at an angle θ = 31.0°.

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