Figure 10 shows a girl doing an experiment to determine her power output by running to the top of some stairs. The mass of the girl was 60.0 kg. The height of the stairs was 175 cm. The girl ran to the top of the stairs in 1.40 s. gravitational field strength = 9.8 N/kg Calculate the power output of the girl. Use the Physics Equations Sheet.

Photo AI

Figure 10 shows a girl doing an experiment to determine her power output by running to the top of some stairs - AQA - GCSE Physics - Question 9 - 2022 - Paper 1

Question 9

Figure 10 shows a girl doing an experiment to determine her power output by running to the top of some stairs. The mass of the girl was 60.0 kg. The height of the ... show full transcript

Worked Solution & Example Answer:Figure 10 shows a girl doing an experiment to determine her power output by running to the top of some stairs - AQA - GCSE Physics - Question 9 - 2022 - Paper 1

Step 1

Calculate the gravitational potential energy (GPE)

96%

114 rated

Answer

The gravitational potential energy can be calculated using the formula:

$E_p = m imes g imes h$

Substituting the values:

Mass (m) = 60.0 kg
Gravitational field strength (g) = 9.8 N/kg
Height (h) = 175 cm = 1.75 m

Thus,

$E_p = 60.0 imes 9.8 imes 1.75 = 1029 ext{ J}$

Step 2

Calculate the power output

99%

104 rated

Answer

Power (P) can be calculated using the formula:

$P = \frac{E_p}{t}$

where:

$E_p$ = 1029 J
$t$ = 1.40 s

Thus,

$P = \frac{1029}{1.40} = 735 ext{ W}$

Join the GCSE students using SimpleStudy...

97% of Students

Report Improved Results

98% of Students

Recommend to friends

100,000+

Students Supported

1 Million+

Questions answered

;