Annabella carries a 12kg bag upstairs to a height of 15 steps and the height of each step is 15cm .the amount of workdone by her is
Answers
Explanation:
It depends upon height pls mention so we all could guide u positively!!
The amount of work done by her is 264.6 joules.
Given data :
Number of stairs she climbed is 15.
Height of one stair is 15 centimetres.
Mass of the bag is 12 kilograms.
• At first we have to calculated the total climbed distance by her,by using the following mathematical formula :
= Total number of stairs × Height one stairs
= 15×15
= 225 cm
= 2.25 metres [ Term of unit conversion 100 cm = 1 m]
• Now,we have to calculate the amount of work done by her by using the following mathematical formula :
= Mass of the object × Climbed Height × Gravity
= 12×2.25×9.8 [ value of Gravitational Acceleration = 9.8 m/s²]
= 264.6 joules [ Unit of work in SI is joules]
So, Annabella had done 264.6 joules of work. (Answer)