Question

2
Two boys A and B lift 100 bricks through the same height in 5 minutes and 6
minutes respectively.
1) A has more power than B
2) B has more power than A
4) None of the above
3) Both have same power​

Answer 1

Explanation:

A has more power than Brefer above attachment for your answer and justification

Answer 2

1) A has more power than B as per the given information.

• Power in this case can be calculated by the formula = work done/time.
• Both the boys will perform the same work as a mass of 100 bricks will remain constant and they lift the bricks through the same height.
• The difference in their action lies in the time taken.
• As per the formula, power is inversely proportional to time. This means, less time taken will indicate more power.
• Since A takes less time in comparison to B for the same work, thus, A has more power than B.