Fill in blank space with the following words:
Black Hole
Law of Universal Gravitation
Efficiency
Power
Weight
Rotational Speed
Torque
- A concentrated mass resulting from gravitational collapse nearwhich gravity is so strong not even light can escape is calleda                     ].
- The ratio of the output energy for a machine to the total inputenergy is calledthe                       of the machine.
- “For any pair of objects, each body attracts the other with aforce that is directly proportional to the product of their massesand inversely proportional to the square of the distance betweentheir centers of mass.†This is a statementof                             .
- Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â isthe rate at which work is done or energy is transformed:work/time.
- Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â isthe number of rotations per unit time.
- The product of the force and the lever arm on a body whichimparts a rotational acceleration on the object iscalled              .
7. The force of an object on a surface, usually due to gravity,is called
