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A small 0.300-kg object moves on a frictionless horizontal table in a circular path of radius 2.40 m. The angular speed is 8.15 rad/s. The object is attached to a string of negligible mass that passes through a small hole in the table at the center of the circle. Someone under the table begins to pull the string downward to make the circle smaller. If the string will tolerate a tension of no more than 175 N, what is the radius of the smallest possible circle on which the object can move?
A 8.85 ?C point charge is glued down on a horizontal frictionless table on the right. If is tied to a -6.65, Find the tension in the wire, What would the tension by if both charges were negative
Find the distance from the mirror to the point where the reflected rays meet.
Question on a planet similar to Earth
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When one gallon of gasoline is burned in a car engine, 1.18 x 10^8 J of internal energy is released. Suppose that 0.99 x 10^8 J of this energy flows directly into the surroundings (engine block and exhaust system) in the form of heat. If 6.0 x 10^5 J..
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If both the ring and the rod are warmed together, what temperature must they both reach so that the ring barely slips over the rod.
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When a rubber band is stretched a distance x, it exerts a restoring force F = -2x + 5x^5. What is the work done in stretching this rubber band from x=0 to x=2.
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