Weight equals mass times gravitational field strength

Steps:

• Recall the formula for weight: W = m × g, where g = 10 N/kg.
• For option D, calculate weight for 5 kg mass: 5 × 10 = 50 N.
• Verify units: mass in kg, g in N/kg, so weight in N.
• Compare all options to identify the match.

Why D is correct:

• It applies Newton's law of gravitation via W = m g, yielding 5 kg × 10 N/kg = 50 N.

Why the others are wrong:

• A: Weight too low; 2 × 10 = 20 N, not 0.2 N (likely confuses with inverse).
• B: Weight too low; 2 × 10 = 20 N, not 10 N (halves the correct value).
• C: Weight too low; 5 × 10 = 50 N, not 10 N (ignores mass factor).

Final answer: D