Physics · Grades 6–10
Weight in a given field
Mass is measured in kg; weight is a force measured in N.
Rule and assumptions
Mass is measured in kg; weight is a force measured in N.
Fᵍ = mg
Worked examples
A mass of 86 kg is in a model gravitational field of 10 N/kg. Find its weight. Round to 3 decimal places if needed. Answer in N.
Fᵍ = mg 86 × 10 = 860
860 N
A mass of 42 kg is in a model gravitational field of 10 N/kg. Find its weight. Round to 3 decimal places if needed. Answer in N.
Fᵍ = mg 42 × 10 = 420
420 N
Try two questions
A mass of 98 kg is in a model gravitational field of 9.8 N/kg. Find its weight. Round to 3 decimal places if needed. Answer in N.
A mass of 47 kg is in a model gravitational field of 1.6 N/kg. Find its weight. Round to 3 decimal places if needed. Answer in N.
Answers and reasoning
Answers and marking notes
- 960.4 N
Fᵍ = mg 98 × 9.8 = 960.4
- 75.2 N
Fᵍ = mg 47 × 1.6 = 75.2
Further reading and review references
These are reference links, not copied exercises, institutional endorsement or proof of independent review.
Learning preview · independent educational and translation review required. Suggested grades are not official curriculum alignment.