Figure 7 shows a truck lifting a box - Edexcel - GCSE Physics - Question 4 - 2022 - Paper 1

To find the change in gravitational potential energy (ΔGPE), we can apply the formula:

$$ΔGPE = m \times g \times h$$

Where:

• m = mass of the box = 57 kg
• g = gravitational field strength = 10 N/kg
• h = height the box is lifted = 2.1 m

Now, substituting the values:

$$ΔGPE = 57 \times 10 \times 2.1$$

Calculating this gives:

$$ΔGPE = 57 \times 21 = 1197 J$$

Rounding this to the nearest hundred gives:

$$ΔGPE \approx 1200 J$$

Thus, the change in gravitational potential energy of the box is approximately 1200 J.