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A person goes to bed at sharp 10-00 pm every day. Is it an example of periodic motion? If yes, what is the time period? If no, why?
No, it is not an example of periodic motion. For periodic motion, the body should change its position from the reference point or with respect to time. Hence in this case, the body is not in periodic motion.
It is proposed to move a particle in simple harmonic motion on a rough horizontal surface by applying an external force along the line of motion. Sketch the graph of the applied force against the position of the particle. Note that the applied force has two values for a given position depending on whether the particle is moving in positive or negative direction.
A hollow sphere filled with water is used as the bob of a pendulum Assume that the equation for simple pendulum is valid with the distance between the point of suspension and centre of mass of the bob acting as the effective length of the pendulum. If water slowly leaks out of the bob, how will the time period vary?