U4 Videos FP 9.1.11

What is binding energy?

• The energy required to accelerate an object.

• The minimum energy or work necessary to completely remove one object from another.

• The kinetic energy of an object in motion.

• The potential energy stored in a stretched spring.

What is the work done by the applied force to lift a book of mass 'm' through a vertical distance 'h' at a constant velocity in a constant gravitational field 'g'?

• mgh

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• 1/2 mv^2

• -mgh

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What is the correct formula for universal gravitational potential energy (Ug) between two masses (m1 and m2) separated by a distance (r)?

• Ug = G(m1*m2)/r^2

• Ug = -G(m1*m2)/r^2

• Ug = -G(m1*m2)/r

• Ug = G(m1*m2)/r

What is the binding energy of an object (mass mo) to Earth (mass mE, radius RE), assuming the object starts on the surface of the Earth and is completely removed to infinity?

• G(mo*mE)/RE

• -G(mo*mE)/RE

• G(mo*mE)/RE^2

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