Question

if two persons A and B takes 2s and 4s respectively to leave an object to same height h then the ratio of their power is ?​

Answer 1

Answer:

1:2

Explanation:

p1/p2 = 2/4

p1/p2 = 1/2

Answer 2

Answer:

2:1

Explanation:

t1 = 2s t2 =4s and h1 = h2=h

pa = mgh1 / t1

pb = mgh2 / t2

pa :pb = mgh1/t1 / mgh2/t2 = (h1/h2)(t2/t1) =t2/t1

pa : pb = 2 :1