Practice question
Question
What is the gravitational force on a 5kg mass 4m from the center of a spherical shell of mass 200kg and radius 3m? (G\=6.67×10−11N m2/kg2)
Explanation
Outside shell: F = GMmr2. F = 6.67×10−11×200×542. F = 6.67×10−916≈4.17×10−10N. As per NCERT, applying relevant law/formula with correct units and sign convention leads to 4.2 × 10⁻¹⁰ N. This satisfies dimensional consistency and physical conditions given, so option C is scientifically correct.
Related blogs
Guides and insights connected to this topic
Light Reflection and Refraction Notes - Spherical Mirrors, Lenses, Power of Lens and Numericals
Explore key optics concepts: laws of reflection, spherical mirrors, lens power and practice numericals in a concise note.
Periodic Classification of Elements Notes - Dobereiner Triads, Newlands Octaves, Mendeleev and Modern Periodic Table
Explore early attempts to classify elements, covering Dobereiner’s triads, Newlands’ law of octaves and Mendeleev’s table with examples and key details.
Determination of KLa
IntroductionThe volumetric liquid mass transfer coefficient (KLa) is a useful parameter to characterize the bioreactor's capacity for aerati...
Discussion
Comments
Please log in to join the discussion.
Login to commentNo comments yet. Be the first to start the discussion.