Determine the period of the motion
At t = 0, a 726g mass at rest on the end of a horizontal spring (k = 115N/m) is struck by a hammer, which gives it an initial speed of 2.58m/s. Determine the period of the motion.
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over a horizontal surface at a constant speed. The coefficient of friction between the sled and the snow is 0.236.The acceleration of gravity is 9.8 m/s2 . Find the work done by the dogs.
A force of 12.7 N acts horizontally on a 21.7-kg mass that is at rest on a smooth table. Find acceleration
A mass of 1.70 kg stretches a vertical spring 0.315 m. If the spring is stretched an additional 0.134 m and released, how long does it take to reach the (new) equilibrium position again?
An electronic device requires a power of 16 W when connected to a 15.0 V battery. How much power is delivered to the device if it is connected to a 11.0 V battery? (Neglect the resistances of the batteries and assume the resistance of the device
A space station, in the form of a wheel 194 m in diameter, rotates to provide an "artificial gravity" of 7.4 m/s2 for persons who walk around on the outer rim. Find the rotational frequency of the wheel (in revolutions per minute) that will produc
The charge is uniformly distributed within the volume of each sphere. What is the magnitude E of the electric field midway between the spheres?
A uniform plank of length 4.5 m and weight 205 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support (see the drawing). To what distance x can a person who weighs 450 N walk on the overhanging part of the pla
A river has a steady speed of 0.500 m/s.A student swims upstream a distane of 1.00 km and swims back to the starting point. If the student can swim at a speed of 1.20 m/s in still water, how long does the trip take? How much time is required in st
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