Multiple choice

Asha lifts a doll from the floor and places it on a table. If the weight of the doll is known, what else does one need to know in order to calculate the work done by Asha on the doll?

  1. Time taken

  2. Height of the table

  3. Mass of the ball

  4. Cost of the doll and table

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Work done is mgh. Here, we know the weight or mg, so we need to know the height of the table where the doll is placed in order to calculate work done.