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What is the weight of a body of mass 100 kg on the surface of the Earth, taking g = 9.8 m s⁻²?
A980 N
B100 N
C9.8 N
D10.2 N
Answer & Solution
Correct answer: A. 980 N
1. Weight W = m x g.
2. Substitute: W = 100 x 9.8.
3. W = 980 N.
4. Rule out 100 N: that reports the mass in newtons, ignoring g.
_Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit 1 "Laws of Motion", p.17_
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