Question

Tim pushes a box with a constant force 250 N at an angle of 45° to the horizontal. If he pushes the box 22 meters, how much work has he done? Keep 4 significant figures.

Answer 1

Answer: 3889 J

Step-by-step explanation:

Given

Force applied
`F=250\ N`

the direction of application is
`\theta=45^(\circ)` above the horizontal

If he pushes the box 22 m

Work done is given by the dot product of force and displacement

`\Rightarrow W=F\cdot s\\\Rightarrow W=250* 22* \cos 45^(\circ)\\\Rightarrow W=3889\ J\quad [\text{upto four significant figure}]`

Hence, option (d) is correct.