Question
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Show that the speed of the pendulum bob at the midpoint of the oscillation is 0.70 m s The mass of the pendulum bob is 0.057 kg. The centre of the pendulum bob is 0.80 m below the support. Calculate the magnitude of the tension in the string when the pendulum bob is vertically below the point of suspension. 9. Which of the following graphs shows the variation with displacement x of the speed v of a particle performing simple harmonic motion. IB Question bank Physics A particle performs simple harmonic oscillations. Which of the following quantities will be unaffected by a reduction in the amplitude of oscillations? A mass on the end of a horizontal spring is displaced from its equilibrium position by a distance A and released. Its subsequent oscillations have total energy E and time period T. An identical mass is attached to an identical spring. The maximum displacement is 2A. Assuming this spring obeys Hookes law, which of the following gives the correct time period and total energy? For a system executing simple harmonic motion, the restoring force acting on the system is proportional to the displacement of the system from equilibrium. amplitude of oscillation. elastic potential energy. frequency of oscillation. A cart, connected to two identical springs, is oscillating with simple harmonic motion between two points X and Y that are equidistant from point O The cart is in equilibrium at all points between X and Y. point O only. points X and Y only. points 0, X and Y only. For a system executing simple harmonic motion, the restoring force acting on the system is proportional to the displacement of the system from equilibrium. amplitude of oscillation. elastic potential energy. frequency of oscillation. The graph below shows how the displacement x of a particle undergoing simple harmonic motion varies with time t. The motion is undamped. Which of the following graphs shows how the total energy E of the particle varies with time wooden block is at rest on a horizontal frictionless surface. A horizontal spring is attached between the block and a rigid support. A rigid support frictionless table The block is displaced to the right by an amount X and is then released. The period of oscillations is T and the total energy of the system is E. For an initial displacement of - which of the following shows the best estimate for the period of oscillations and the total energy of the system?
Explanation / Answer
9) D
10) D
11) A
12) A
13) B
14) A
15) D
17) B
