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3 years ago

How much work output can a 150hp snowmobile do in 15 seconds if it is 18 % efficiency?

Physics

1 answer:

Sav [38]3 years ago

3 0

The work output is $3.02\cdot 10^5 J$

Explanation:

The power of the snowmobile is

$P=150 hp$

Keeping in mind that

$1 hp = 746 W$

We can convert it into Watts:

$P=(150)(746)=111,900 W$

The energy used by the snowmobile can be found as follows:

$E=Pt$

where

P = 111,900 W is the power used

t = 15 s is the time interval

Substituting,

$E=(111,900)(15)=1.68\cdot 10^6 J$

However, the snowmobile is 18% efficient: this means that only 18% of this energy is converted into useful work. Therefore, the work output is

$W=0.18E=(0.18)(1.68\cdot 10^6)=3.02\cdot 10^5 J$

Learn more about power and work:

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Explanation:

using the law of the conservation of energy:

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