Jack pulls a box across the floor with a horizontal forces, the box moves at a c
ID: 1495843 • Letter: J
Question
Jack pulls a box across the floor with a horizontal forces, the box moves at a constant velocity, a frictional force is acting on the box for 10m and jack does 300 J of work in pulling the box over that 10m l, what was the frictional force on the box? Jack pulls a box across the floor with a horizontal forces, the box moves at a constant velocity, a frictional force is acting on the box for 10m and jack does 300 J of work in pulling the box over that 10m l, what was the frictional force on the box?Explanation / Answer
it is given that the box moves at constant velocity so it means the net force is zero
in the other sense
friction force = applied force.
workdone = (force) (displacement)
frictional force = (workdone) / (displacement)
= 300 / 10
= 30 N
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