Question

Ivan exerts 20 N of force to lift a basket 2 m. He then carries the basket 5 m across a room to place it on a shelf. Ivan does work when he . The amount of work he does is .

Answer 1

Answer:

Ivan does work when he lifts the object from the ground. The amount of work he does is 40J

Explanation:

So when Ivan lifts the object, he is applying a force in the upward direction, resulting in the upward displacement of the basket. So the work done is:

W = F × S

= 20N × 2m

= 40 Nm

= 40 J

Now, as he starts walking with the basket, he is still applying upward force. But here his displacement is perpendicular to the direction of the force applied. This is a condition for zero work.

Hence, work done during walking = 0 J

Therefore, net work in the entire process:

= 40+0 J

= 40 J

Hope that helps you

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