Recent content by chess10771

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    Simple Harmonic Motion: Maximum Speed of a Grandfather Clock Pendulum in cm/s

    Homework Statement A grandfather clock is constructed so that it has a simple pendulum that swings from one side to the other, a distance of 22.0 mm, in 1.00 s. What is the maximum speed of the pendulum bob? Use two different methods. First, assume SHM and use the relationship between...
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    Intensity of the superposition of sound waves

    ok so what exactly do i do then?
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    Determine the mass per unit length of the string.

    ok, i get an answe 1.5e-5 but its not correct am i doing something wrong
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    Intensity of the superposition of sound waves

    Homework Statement A sound wave with intensity 4 mW/m2 interferes destructively with a sound wave that has an intensity of 10 mW/m2. What is the intensity of the superposition of the two? Homework Equations sqrt of both values The Attempt at a Solution i believe that taking the...
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    Determine the mass per unit length of the string.

    Homework Statement A guitar's E-string has length 65 cm and is stretched to a tension of 85 N. It vibrates at a fundamental frequency of 329.79 Hz. Determine the mass per unit length of the string. 1Your answer is in kg/m Homework Equations (mass per unit length) = (tension) /...
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    Finding New Rate of Rotation for a Student on a Rotating Platform with Dumbbells

    Homework Statement A student stands on a platform that is free to rotate and holds two dumbbells, each at a distance of 65 cm from his central axis. Another student gives him a push and starts the system of student, dumbbells, and platform rotating at 0.95 rev/s. The student on the platform...
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    Question on total moment of inertia

    Homework Statement A lawn sprinkler has three spouts that spray water, each r = 15.5 cm long. As the water is sprayed, the sprinkler turns around in a circle. The sprinkler has a total moment of inertia of 9.10 10^-2 kg · m2. If the sprinkler starts from rest and takes 2.60 s to reach its...
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    Calculating Torque on a Trap Door: Question and Equations

    Homework Statement A trap door, of length and width 1.65 m, is held open at an angle of 65.0° with respect to the floor. A rope is attached to the raised edge of the door and fastened to the wall behind the door in such a position that the rope pulls perpendicularly to the trap door. If the...
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    Simple Physics question about rotational inertia

    Homework Statement A bowling ball made for a child has two thirds the radius of an adult bowling ball. They are made of the same material (and therefore have the same mass per unit volume). (a) By what factor is the mass of the child's ball reduced compared with the adult ball? (b) By...