Question

Cutting a fruit with knife is an example of positive work. why

Answer 1

Answer:

Knife has a sharp edge so that the effort applied acts on a small area and gives more pressure. Therefore, we can easily cut fruits with it.

Answer 2

Answer:

Positive work: when force and displacement are in the same direction, the work performed on an object is said to be positive work. ... Example: Work was done the gravity on a rocket going perpendicular upwards. Zero work: When force and displacement are perpendicular to each other, or when force or displacement is zero.