Aman carries a 10 kg sack of groceries in his arms with a force of 50 n as he walks forward a distance of 10 m how much work has he done

Explanation :

It is given that :

Mass of man, m = 10 kg

Force, F = 50 N

Distance, d = 10 m

We know that, the work done depends on the following factors :

where,

is the angle between force and the displacement.

In this case, a man carries a 10 kg sack of groceries in his arms with a force of 50 N as he walks forward a distance of 10 m. His weight mg will act downward and the displacement is forward.

So, the angle between force and displacement is 90.

This implies, work done W = 0

Hence, this is the required solution.

b.

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