Aman pushes a lawn mower on a level lawn with a force of 195 n. if 37% of this force is directed downward, how much work is done by the man in pushing the mower 5.7 m?

Explanation:

Net force by which man push the lawn mower is given as

now it is given that 37% of this force is vertically downwards

so we will have

now we also know that

here we have

Now work done by this force to move the lawn mower is given as

r=rho l/a where a is the area, l is the length and rho is resistivity so the greater the area the lesser the resistance thats why the earth pin is thicker bcos current follow the shortest path, so less resistive .

iron would move it is magnetic there is a mag field around the current in the wire