Question

Q. Two army persons A & B each of weight 500N climbs up the rope through a height of 10m. A takes 20sec. & B takes 40sec. Find the ratio of the power between A & B.
(a) 1:2
(b) 1:4
(c) 2:1
(d) 14:1
Please help it's urgent
Class 9th Chapter - Work And Energy
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Answer 1

Explanation:

please see the attachment

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Answer 2

Question :

Two army persons A & B each of weight 500N climbs up the rope through a height of 10m. A takes 20sec. & B takes 40sec. Find the ratio of the power between A & B.

Option :

(a) 1:2

(b) 1:4

(c) 2:1

(d) 14:1

Given :

Weight of two army = 500N.

Distance(height) = 10m.

Time taken by A = 20sec.

Time taken by B = 40sec.

Answer :

(c) 2:1

Full solution :

Click on attached picture.