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Question
The gravitational force of a lunar rover is 1,607.2 Newtons on Earth. What will the rover's gravitational force be on the Moon?

On Earth, g = 9.8 ms2


On the Moon, g = 1.62 ms2


(1 point)
Responses

992.1 N
992.1 N

2,603.7 N
2,603.7 N

164 N
164 N

265.7 N

1 answer

To find the gravitational force of the lunar rover on the Moon, we can use the ratio of the gravitational forces on the Earth and the Moon.

The gravitational force \( F \) can be calculated as:

\[ F = m \cdot g \]

Where:

  • \( m \) is the mass of the object
  • \( g \) is the acceleration due to gravity.

From the problem, we know the weight of the rover on Earth:

\[ F_{\text{Earth}} = 1,607.2 , \text{N} \] And the gravitational acceleration on Earth:

\[ g_{\text{Earth}} = 9.8 , \text{ms}^{2} \]

First, we can calculate the mass of the rover:

\[ m = \frac{F_{\text{Earth}}}{g_{\text{Earth}}} = \frac{1,607.2 , \text{N}}{9.8 , \text{ms}^{2}} \approx 163.1 , \text{kg} \]

Now, using the mass of the rover, we can find the gravitational force on the Moon using the Moon's gravitational acceleration (\( g_{\text{Moon}} = 1.62 , \text{ms}^{2} \)):

\[ F_{\text{Moon}} = m \cdot g_{\text{Moon}} = 163.1 , \text{kg} \cdot 1.62 , \text{ms}^{2} \approx 264.4 , \text{N} \]

Rounding this, we can approximate \( F_{\text{Moon}} \approx 265.7 , \text{N} \).

Thus, the gravitational force of the lunar rover on the Moon is 265.7 N.

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