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SMDEP Physics

Get assistance with SMDEP Physics homework problems related to gravity, simple harmonic motion, frequency, periods, and oscillations. Vote on required problems and clarify concepts with TA sessions.

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SMDEP Physics

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  1. SMDEP Physics Gravity, Simple Harmonic Motion

  2. Vote only on required HW problems • Other problems will be worked out in TA sessions

  3. 44 of 70 0 Ch 14, #3: frequency? • 2.3 Hz • 8.3 Hz • 1.2 Hz • 0.3 Hz • Other • Didn’t finish

  4. 70 43 0 Ch 14, #40: period on Mars? • 1.3 s • 2.2 s • 0.5 s • 32 s • Other • Didn’t finish

  5. 0 45 of 70 Suppose the Earth had no atmosphere and a ball were fired from the top of Mount Everest tangent to the ground. If the initial speed was large enough to cause the ball to move in a circular trajectory around the Earth, the ball’s acceleration would: • Be much less than g (because the ball doesn’t fall to the ground) • Be approximately g • Depend on the ball’s initial speed

  6. 0 44 of 70 The Moon does not fall to Earth because: • The net force on it is zero • It is beyond the main pull of Earth’s gravity • It is being pulled by the Sun and other planets as well as Earth • All of the above • None of the above

  7. 0 42 of 70 An object moves along the x-axis subject to a force described by the potential energy shown below. About what point can the object execute an oscillation? • A • B • C • All of the above • None of the above U(x) C A B x

  8. 0 39 of 70 A block hangs from a spring. The block is held at a position where the spring is unstretched and then released. What happens? • It remains at rest at the new equilibrium position. • It oscillates about the unstretched string position. • It oscillates about a position that is lower than its initial position. • It moves but not in simple harmonic motion because the net force is not proportional to the displacement.

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