. What is the weight of a 90kg man standing on Earth, where gearth = 9.82 m/s2?

Question

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A.
80.2 N

B.
884 N

C.
99.8 N

D.
9.2 N

Answer 1

To calculate the weight of a 90 kg man standing on Earth, you can use the formula:

\[ \text{Weight} = \text{mass} \times \text{gravity} \]

Given:

• Mass (m) = 90 kg
• Acceleration due to gravity (g) = 9.82 m/s²

Substituting the values into the formula:

\[ \text{Weight} = 90 , \text{kg} \times 9.82 , \text{m/s}² \] \[ \text{Weight} = 883.8 , \text{N} \]

Rounding to one decimal place, the weight is approximately 884 N.

Therefore, the correct answer is:

B. 884 N