Math Problem Statement

Answer this

If your mass is 68.05 kg, how much gravitational force would you experience on the surface of the Moon? Use Newton's law of gravitation.

Solution

To solve this problem, we use Newton's law of gravitation formula:

Fgravity=Gm1m2r2F_{\text{gravity}} = \frac{G m_1 m_2}{r^2}

Where:

  • G=6.67×1011N\cdotpm2/kg2G = 6.67 \times 10^{-11} \, \text{N·m}^2/\text{kg}^2 is the gravitational constant,
  • m1m_1 is the mass of the Moon,
  • m2=68.05kgm_2 = 68.05 \, \text{kg} is your mass,
  • rr is the radius of the Moon.

From the table:

  • m1=7.35×1022kgm_1 = 7.35 \times 10^{22} \, \text{kg},
  • r=1.74×106mr = 1.74 \times 10^6 \, \text{m}.

Step-by-step calculation:

  1. Substitute the values into the formula: Fgravity=(6.67×1011)(7.35×1022)(68.05)(1.74×106)2F_{\text{gravity}} = \frac{(6.67 \times 10^{-11})(7.35 \times 10^{22})(68.05)}{(1.74 \times 10^6)^2}

  2. Calculate the denominator (r2r^2): (1.74×106)2=3.0276×1012(1.74 \times 10^6)^2 = 3.0276 \times 10^{12}

  3. Calculate the numerator (Gm1m2G \cdot m_1 \cdot m_2): (6.67×1011)(7.35×1022)(68.05)=3.327×1014(6.67 \times 10^{-11})(7.35 \times 10^{22})(68.05) = 3.327 \times 10^{14}

  4. Divide the numerator by the denominator: Fgravity=3.327×10143.0276×1012=109.89NF_{\text{gravity}} = \frac{3.327 \times 10^{14}}{3.0276 \times 10^{12}} = 109.89 \, \text{N}

Final Answer:

The gravitational force you would experience on the Moon is approximately:

110N\boxed{110 \, \text{N}}

Would you like further clarification or a breakdown of any part of this?

Here are 5 related questions for expansion:

  1. How would your weight differ on Mars versus the Moon?
  2. What would be the effect of doubling your mass on the gravitational force?
  3. How does the gravitational constant GG affect the calculations on other planets?
  4. Why does the radius play such a significant role in determining gravitational force?
  5. How can this formula be adapted for orbital mechanics?

Tip: Always ensure the units of radius and mass match the context of the formula to avoid miscalculation.

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Math Problem Analysis

Mathematical Concepts

Physics
Gravitational Force
Newton's Law of Gravitation

Formulas

F_gravity = (G * m1 * m2) / r^2

Theorems

Newton's Law of Universal Gravitation

Suitable Grade Level

Grades 10-12