Gravitation – Gravitational Potential Energy, Escape Velocity, Orbital Velocity
Physics · Grade 11 · Week 22 · 25 questions
This Grade 11 physics unit on Gravitation develops your understanding of Gravitational Potential Energy, Escape Velocity, and Orbital Velocity. Solid foundations here make later chapters on mechanics, electromagnetism, and modern physics much easier.
What you'll practise
- Calculate Gravitational Potential Energy
- Calculate Escape Velocity
- Calculate Orbital Velocity
- Apply gravitation concepts to NCERT exercise and exemplar problems
All 25 questions in this Gravitation – Gravitational Potential Energy, Escape Velocity, Orbital Velocity quiz
Grade 11 Physics — Gravitation – Gravitational Potential Energy, Escape Velocity, Orbital Velocity: 25 practice questions with instant scoring and explanations.
- Gravitational PE of a body at distance r from Earth's centre:
- Negative sign in gravitational PE indicates:
- PE of a body at infinity is:
- Escape velocity from Earth's surface:
- Value of escape velocity from Earth:
- Escape velocity in terms of g and R:
- Escape velocity depends on:
- Escape velocity from Moon (approx):
- Orbital velocity of a satellite at height h:
- Orbital velocity near Earth's surface:
- Ratio of escape velocity to orbital velocity near surface:
- Orbital period T for satellite at radius r:
- A satellite in orbit has KE equal to:
- Total energy of satellite in orbit:
- Binding energy of satellite at orbit = :
- Escape velocity is independent of:
- If escape velocity from a planet is v_e and radius R, GM = :
- Speed needed for a body at height h to escape:
- For a satellite closer to Earth, orbital speed is:
- KE of satellite in orbit at radius r:
- PE of satellite in orbit at radius r:
- Total energy of satellite is negative because:
- For a satellite to go to infinity, its total energy must be:
- Escape speed at a height equal to Earth's radius (h=R):
- If orbital speed is v, escape speed is:
Question 1 of 250 correct so far