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Taking $g = 9.8$ m/s$^2$, the weight of an object of mass 75 kg on the Earth's surface is:
A7.65 N
B75 N
C9.8 N
D735 N
Answer & Solution
Correct answer: D. 735 N
1. Weight is the gravitational force, $W = mg$.
2. Substitute $m = 75$ kg and $g = 9.8$ m/s$^2$.
3. $W = 75 \times 9.8 = 735$ N.
4. 75 is the mass in kg, not the weight; 9.8 N is the weight of just 1 kg, so both are traps.
_Source: Balbharati (Maharashtra Board) Class 10 Science & Technology, Ch 1 "Gravitation", p.18_
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