For a machine, the input force is 30 n, and the input distance is 2 m. factoring in the effect of friction, what must be true about the work output?
a. it must be greater than 60 j
b. it equals 60 j.
c. it must be less than 60 j

C. It must be less than 60 J

Explanation:

The work going into the machine is the product of the force and distance:

W = Fd

W = (30 N) (2 m)

W = 60 J

The work out of the machine is less than this due to the frictional losses.

the answer is b, have negligible mass

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