Universal gravitation quiz

Answer 1

Sure! Here's a quiz on universal gravitation for you. The questions vary in difficulty, and I’ve included the answers at the end. Let's get started!

Universal Gravitation Quiz

Multiple Choice Questions

1. Who formulated the law of universal gravitation? a) Albert Einstein
   b) Isaac Newton
   c) Galileo Galilei
   d) Johannes Kepler

2. According to Newton’s law of universal gravitation, the force of attraction between two objects depends on: a) Their masses and the distance between them
   b) Only their masses
   c) Only the distance between them
   d) Their shapes

3. The gravitational force between two objects decreases as: a) Their masses increase
   b) Their distance decreases
   c) Their distance increases
   d) Both a and b

4. If the distance between two objects is doubled, the gravitational force between them: a) Becomes half
   b) Becomes one-fourth
   c) Remains the same
   d) Becomes double

5. What is the value of the gravitational constant (G) in the law of universal gravitation? a) \(6.67 \times 10^{-11} , \text{N m}^2/\text{kg}^2\)
   b) \(9.81 , \text{m/s}^2\)
   c) \(3 \times 10^8 , \text{m/s}\)
   d) \(1.6 \times 10^{-19} , \text{C}\)

True or False

6. The gravitational force is the weakest of the four fundamental forces in nature.
7. The gravitational force between two objects is always attractive.
8. Mass and weight are the same concept in physics.

Short Answer

9. Write the formula for calculating the force of gravitational attraction between two masses.

10. Explain how universal gravitation is responsible for the orbits of planets around the Sun.

Answers

1. b) Isaac Newton
2. a) Their masses and the distance between them
3. c) Their distance increases
4. b) Becomes one-fourth
5. a) \(6.67 \times 10^{-11} , \text{N m}^2/\text{kg}^2\)
6. True
7. True
8. False
9. \( F = G \frac{m_1 m_2}{r^2} \)
10. Universal gravitation describes how masses attract each other. The gravitational pull of the Sun provides the necessary force to keep the planets in orbit, preventing them from flying off into space. The planets move in elliptical paths due to the balance between their forward momentum and the gravitational attraction of the Sun.

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