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At the bottom of its swing the pirate boat passes over a roller that transfers some energy to the pirate boat - Edexcel - GCSE Physics - Question 3 - 2016 - Paper 1

Question 3

At the bottom of its swing the pirate boat passes over a roller that transfers some energy to the pirate boat. (a) The photograph shows the pirate boat at the top o... show full transcript

Worked Solution & Example Answer:At the bottom of its swing the pirate boat passes over a roller that transfers some energy to the pirate boat - Edexcel - GCSE Physics - Question 3 - 2016 - Paper 1

Step 1

State the main form of energy that the pirate boat has gained by the time it reaches the top of the swing.

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Answer

The main form of energy that the pirate boat has gained by the time it reaches the top of the swing is gravitational potential energy (GPE).

Step 2

Calculate the power supplied to the electric motor.

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Answer

To calculate the power supplied to the electric motor, we use the formula:

$ext{Power} = rac{ ext{Energy}}{ ext{Time}}$

Substituting the known values:

$ext{Power} = \frac{190000 ext{ J}}{2.3 ext{ s}}$

Evaluating this gives:

$ext{Power} \approx 82608.7 ext{ W}$

Rounding this to two significant figures, the power supplied to the electric motor is approximately 83000 W.

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