Question

Work varies directly with the

distance an object moves. A
man uses a 32-kilogram push
lawn mower to mow his yard.
If the man pushes the lawn mower a
distance of 400 meters, how much work,
in joules, does the man do while mowing
his yard? (Hint: The weight of the lawn
mower is constant.)

Answer 1

125440J

Explanation:

Given parameters:

Mass of push = 32kg

Distance = 400m

Unknown:

Work done by the man = ?

Solution:

The work done is the product of force and distance;

Work done = force x distance

Here, the force applied is;

Force = mg = 32 x 9. 8 = 313.6N

Now,

Work done = 313.6 x 400 = 125440J