Question

. Anne is pushing a wheelbarrow filled with mulch to place in her garden. She is pushing the wheelbarrow with a force of 70 N at an angle of 50° with the horizontal. How much work in joules is Anne doing when she pushes the wheelbarrow 25 meters?

Answer 1

When Anne pushes the wheelbarrow 25 meters the work done is 1120 joules

Solution:

We know
`\text { Work }(\mathrm{W})=\text { Force }(\mathrm{F})*\text { Distance (D) }`

Anne is pushing the wheelbarrow with a force of 70 N at an angle of
`50^(\circ)` with the horizontal

So the force of Anne will be
`F=70 \cos 50^(\circ)=(70 * 0.64)=44.8 \mathrm{N}`

She pushes the wheelbarrow 25 meter, So D = 25 meters

So, the
`work,F* D=(44.8 * 25)=1120 \text { Joules }`

Anne has done total 1120 joules work.