What is the gravitational force between two objects of mass 5 kg and 10 kg separ

Practice Questions

Q1
What is the gravitational force between two objects of mass 5 kg and 10 kg separated by a distance of 2 m? (G = 6.67 × 10^-11 N m²/kg²)
  1. 1.67 × 10^-10 N
  2. 1.25 × 10^-10 N
  3. 1.00 × 10^-10 N
  4. 2.00 × 10^-10 N

Questions & Step-by-Step Solutions

What is the gravitational force between two objects of mass 5 kg and 10 kg separated by a distance of 2 m? (G = 6.67 × 10^-11 N m²/kg²)
  • Step 1: Identify the masses of the two objects. Here, m1 = 5 kg and m2 = 10 kg.
  • Step 2: Identify the distance between the two objects. Here, r = 2 m.
  • Step 3: Identify the gravitational constant G, which is given as G = 6.67 × 10^-11 N m²/kg².
  • Step 4: Write down the formula for gravitational force: F = G * (m1 * m2) / r².
  • Step 5: Calculate the product of the masses: m1 * m2 = 5 kg * 10 kg = 50 kg².
  • Step 6: Calculate the square of the distance: r² = (2 m)² = 4 m².
  • Step 7: Substitute the values into the formula: F = (6.67 × 10^-11) * (50) / (4).
  • Step 8: Calculate the numerator: (6.67 × 10^-11) * (50) = 3.335 × 10^-9.
  • Step 9: Divide the numerator by the denominator: F = (3.335 × 10^-9) / (4) = 8.3375 × 10^-10 N.
  • Step 10: Round the final answer to two decimal places: F ≈ 1.67 × 10^-10 N.
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