Question

What is the magnitude of the gravitational force between the earth and a

2 kg object on its surface ?
(use constant value for earth )​

Answer 1

Answer:

Attached above ☝️

Explanation:

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Answer 2

Correct Question :

What is the magnitude of the gravitational force between the earth and a 2 kg object on its surface ?

(Mass of the earth is 6 × 10²⁴ kg and radius of the earth is 6.4 × 10⁶ m.)

Given :

• Mass of object (m) = 2 kg
• Mass of earth (M) = 6 × 10²⁴ kg
• Radius of earth (r) = 6.4 × 10⁶ m
• Gravitational constant (G) = 6.7 × 10⁻¹¹ Nm²kg⁻²

To Find :

• Gravitational Force (F) = ?

Solution :

To calculate the magnitude of the gravitational force between the earth and a 2 kg object on its surface we will use the given below formula :

• F = (GMm)/r²

Now, we have to simply plug in the given values in above formula :

⇒F = (6.7 × 10⁻¹¹ × 6 × 10²⁴ × 2)/(6.4 × 10⁶)²

⇒F = (80.04 × 10¹³)/(40.96 × 10¹²)

⇒F = (80.04 × 10¹³ × 10⁻¹²)/40.96

⇒F = (80.04 × 10¹)/40.96

⇒F = (800.4)/40.96

⇒F = 19.54 N

• Hence,the magnitude of the gravitational force between the earth and a 2 kg object on its surface is 19.54 N.