Question

calculate the work done in pushing card through a distance of 56 m against the force of an equal to 250 N. Also state the type of work done.
Sarita lives on 3rd floor of the building at the height of 15 M carries a school bag weight 5.2 kg from the ground floor to her house .Find the amount of work done by her and identify the force Again which she has done work. (g=10ms^-2).​

Answer 1

work = force × displacement

      = 250N × 50m

      = 12500 J

the work done is negative because the force of friction and displacement are acting in the opposite direction.

Answer 2

hey shivtej here your answer.......... as we know that force = work × displacement so force. so work = displacement / force that is equal to 14 kj so two types of work done are here 1) mental work 2) physical work ...... hope it's helpful... here is your second answer as we know that f= ma so f=5.2×10=52 and also f= work×displacement that is 52×15=780 joule