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physics

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A ball, of mass 0.13Kg, is held on the inside of a smooth hemispherical bowl at a height 0.25 m above the base. It is then released. Assuming there is no friction, the acceleration due to gravity, g, is 10 m/s2 and the potential energy is zero at the base of the bowl - What is the speed of the ball at a height of 0.1 m above the base?

  • physics -

    Use conservation of energy. For the correct answer, you need to include the rotational kinetic energy of the ball.

  • physics -

    If the bowl is so smooth that the ball slides and does not roll, you can neglect rotational kinetic energy.
    Classes that ask you to assume g has the incorrect value of 10 m/s^2 are doing a disservice to physics education and the students, in my opinion.

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