Engine 1 produces twice the power of engine 2. If it takes engine 1 the time T to do the work W, how long does it take engine 2 to do the same work?
Express your answer in terms of some of all of the variables T and W.
T2=

Explanation:

Given that engine 1 produces twice the power of engine 2.

Let and be the power of engine 1 and engine2.

So, the power of the engine 2,

As, Work = Power x time,

So, the work, W, done by an engine 1:

The work, W, done by an engine 2:

If the work done by both the engines are the same, then

[from (ii) nd (iii)]

[by using (i)]

Hence,

the part of the wave he is travelling on is the crest