On your PE and GPE Calculations assignment, #1 asked you to calculate the weight for the objects in the table. What was your answer for the weight of a mass of 20 kg?

Question

1.980 N
2.980 J
3.78.4 N
4.196 N

Answer 1

To calculate the weight of an object, you can use the formula:

\[ \text{Weight} (W) = \text{mass} (m) \times \text{gravity} (g) \]

The standard acceleration due to gravity \( g \) is approximately \( 9.8 , \text{m/s}^2 \).

For a mass of 20 kg:

\[ W = 20 , \text{kg} \times 9.8 , \text{m/s}^2 = 196 , \text{N} \]

Therefore, the weight of a mass of 20 kg is approximately 196 N. Among your options, the closest answer is:

4. 196 N.