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Chapter 5 – Gravitation
Chapter 6 – Work and Energy
Chapter 5
• (5.6) Newton’s Law of Universal Gravitation
• (5.7) Gravity Near the Earth’s Surface
Chapter 6 (today)
• Work Done by a Constant Force
• Kinetic Energy, and the Work-Energy Principle
Old assignments can be picked up
in my office
(LB-212)
Recalling Recalling
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Recalling Recalling
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Newton’s Law of Universal GravitationNewton’s Law of Universal Gravitation
Newton’s law of universal gravitation:
“ Every particle in the universe attracts every other particle with a force that is
proportional to the products of their masses and inversely proportional to the
square of the distance between them. This forces acts along the line joining the
square of the distance between them. This forces acts along the line joining the
two particles.”
Newton’s Law of Universal GravitationNewton’s Law of Universal Gravitation
The magnitude of this force is given by:
Where:
(4.7)
Newton’s Law of Universal GravitationNewton’s Law of Universal Gravitation
If m2is the object exerting a force on m1, then the gravitational acceleration felt
by object 1 can be identified as:
(4.8)
