Gravitational field strength g equals weight divided by mass

Steps:

• Measure the weight W of the object using a spring balance or similar device.
• Measure the mass m of the object using a balance.
• Apply the formula for weight: W = m × g.
• Rearrange to solve for g: g = W / m.

Why C is correct:

• By definition, g = W / m, where W is weight (force in newtons) and m is mass (in kilograms), yielding g in m/s².

Why the others are wrong:

• A: Weight W equals m × g, a force, not equal to g.
• B: Mass m is a scalar quantity in kilograms, not equal to g in m/s².
• D: Same as A; weight is m × g, not g itself.

Final answer: C