Important Gravitation Concepts and Sample Questions for Exams 2025
Gravitation is a foundational chapter in JEE Physics, exploring Newton’s Law of Gravitation, gravitational fields, acceleration due to gravity, escape velocity, and satellite motion. A solid grasp of these concepts is essential for mastering tough problems and boosting your Physics score. Attempt this mock test to thoroughly practice and reinforce your understanding of Gravitation’s key principles for JEE Main 2025.
Mock Test Instructions for the Gravitation Mock Test 1:
- 20 questions from Gravitation
- Time limit: 20 minutes
- Single correct answer per question
- Correct answers appear in bold green after submission
How Can JEE Mock Tests Help You Master Gravitation Concepts?
- Identify gaps in understanding Newton’s Law of Gravitation and related formulas.
- Enhance problem-solving speed for MCQs on escape velocity, satellites, and gravitational field.
- Refine your strategies by repeatedly testing with varying difficulty Gravitation questions.
- Get instant feedback to boost confidence ahead of the JEE Physics exam.
- Spot and resolve common calculation errors in gravitation-based numerical problems.
Master Gravitational Laws & Satellite Motion with Vedantu's Expert-Designed JEE Mock Tests
- Strengthen grasp of concepts like gravitational potential energy and field intensity.
- Apply theoretical knowledge to previous-year question patterns on Gravitation.
- Practice time management for lengthier calculation-based MCQs in live conditions.
- Test readiness on satellite and planetary motion-related scenario questions.
- Achieve greater retention of formulas such as escape speed and acceleration due to gravity.
Subject-Wise Excellence: JEE Main Mock Test Links
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| 1 | Online FREE Mock Test for JEE Main Chemistry |
| 2 | Online FREE Mock Test for JEE Main Maths |
| 3 | Online FREE Mock Test for JEE Main Physics |
Important Study Materials Links for JEE Exams
FAQs on Gravitation Mock Test 2025: Practice Questions and Answers
1. What is the difference between gravity and gravitation with examples?
Gravity specifically refers to the attractive force that the Earth exerts on objects near its surface, such as a ball falling to the ground. Gravitation is the universal force of attraction between any two bodies in the universe, like the attraction between Earth and the Moon. For example, gravity pulls you towards the ground on Earth, while gravitation keeps planets in orbit around the Sun.
2. What is Newton’s Law of Gravitation?
Newton’s Law of Gravitation states that every point mass attracts every other point mass with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them. The formula is: F = G (m₁m₂) ⁄ r², where G is the gravitational constant.
3. What is the value of the gravitational constant (G)?
The gravitational constant (G) is a fundamental physical constant used in Newton's law of gravitation. Its value is 6.674 × 10-11 Nm²/kg².
4. What are the key differences between gravity and gravitational constant?
Gravity is a force experienced due to the Earth's mass, while the gravitational constant (G) is a universal constant used in calculating gravitational force between any two objects. Gravity is a phenomenon, but G is a value used in the calculation.
5. Explain the gravity model with an example.
The gravity model in physics or geography predicts interaction between two bodies as proportional to their masses (or sizes) and inversely proportional to the square of the distance between them. For example, in trade, the gravity model predicts trade flow between two cities increases with their population sizes and decreases as the distance between them increases.
6. What does it mean by 'gravity of a situation'?
Gravity of a situation refers to the seriousness or importance of an event or issue. For example, when a teacher says, "You do not understand the gravity of your mistake," they mean you are not realizing how serious it is.
7. What factors affect the gravitational force between two objects?
Gravitational force between two objects depends on:
- The masses of both objects (greater mass equals greater force)
- The distance between their centers (greater distance equals weaker force)
8. Why do astronauts feel weightless in space?
Astronauts feel weightless in space because both they and their spacecraft are in free fall towards Earth due to gravitation, but since they are falling together, they experience no normal reaction force.
9. How does the force of gravity on the Moon differ from that on Earth?
The force of gravity on the Moon is about one-sixth that on Earth. This means objects weigh much less on the Moon because the Moon’s mass is smaller and its radius is less compared to Earth.
10. What is universal gravitation?
Universal gravitation refers to the concept that every mass in the universe attracts every other mass with a force called gravitational force, as described by Newton’s Law of Universal Gravitation.
11. Give a practice question: Calculate the gravitational force between two objects of mass 5 kg and 10 kg separated by 2 meters.
Given masses: m₁ = 5 kg, m₂ = 10 kg; distance r = 2 m; G = 6.674 × 10-11 Nm²/kg².
Using F = G (m₁m₂) ⁄ r²,
F = 6.674 × 10-11 × (5 × 10)/(2²) = 1.6685 × 10-10 N
12. What is the relationship between mass, weight, and gravity?
Weight is the force with which gravity pulls an object towards the center of a planet. It is given by the formula Weight (W) = Mass (m) × Acceleration due to gravity (g). Mass is the amount of matter in an object and does not change, but weight varies depending on the value of gravity.
