A mass of 20 kg is at a height of 8 m above the ground. Then the potential energy possessed by the body is:
[Given `g = 9.8 ms^(-2)`]

Options

A. 1568 J
B. 1568 C
C. 1568 W
D. 1568 N

Answer

To calculate the potential energy (PE) possessed by a mass at a certain height, we can use the formula:

\[ PE = mgh \]

Where:
- \( m \) = mass (in kg)
- \( g \) = acceleration due to gravity (in \( m/s^2 \))
- \( h \) = height (in m)

### Step-by-step Solution:

1. **Identify the values**:
- Mass \( m = 20 \, \text{kg} \)
- Acceleration due to gravity \( g = 9.8 \, \text{m/s}^2 \)
- Height \( h = 8 \, \text{m} \)

2. **Substitute the values into the formula**:
\[ PE = 20 \, \text{kg} \times 9.8 \, \text{m/s}^2 \times 8 \, \text{m} \]

3. **Perform the multiplication**:
- First, calculate \( 20 \times 9.8 \):
\[ 20 \times 9.8 = 196 \]
- Next, multiply the result by the height \( h \):
\[ 196 \times 8 = 1568 \]

4. **Conclusion**:
- The potential energy possessed by the body is:
\[ PE = 1568 \, \text{Joules} \]

### Final Answer:
The potential energy possessed by the body is **1568 Joules**.

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