Question

A staircase has 10steps each is 15 CM high. A girl whose mass is 50kg goes up to the top of the stair case. calculate the amount of work done by the girl. ​

Answer 1

Answer:

As work done = Force * Displacement

Displacement = 150 cm = 150/100 m = 1.5 m

Force = Weight = 50 * 9.8 = 490 N

Now,

Work done = F * d

                   = 490 * 1.5

                   = 735 Joule

Answer 2

Answer:

A staircase has 10steps each is 15 CM high. A girl whose mass is 50kg goes up to the top of the stair case. calculate the amount of work done by the girl. ​

Explanation: