Universal Law Of Gravitation
Two masses of 5 kg and 10 kg are separated by a distance of 2 m. What is the gravitational force between them? (G = 6.67 × 10⁻¹¹ N·m²/kg²)
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About This Question
- Subject
- physics
- Chapter
- gravitation
- Topic
- universal law of gravitation
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
8.34 × 10⁻¹⁰ N
- Universal Law Formula: The force F between two masses m1 and m2 is:
- F=Gr2m1m2.
- Identify Data:
- G=6.67×10−11 N⋅m2/kg2.
- m1=5 kg.
- m2=10 kg.
- r=2 m.
- Calculation:
- F=226.67×10−11×5×10=4333.5×10−11.
- Result: F=83.375×10−11=8.34×10−10 N.
- Note: This force is always attractive and acts along the line joining the centers of the two masses.
This easy difficulty physics question is from the chapter gravitation, covering the topic of universal law of gravitation. It appeared in the 2025 exam.
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