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Q1. A simple harmonic oscillator consists of a block of mass 1.20 kg attached to a spring of spring constant 184 N/m. As t = 2.00 s, position and velocity of the block are x = +0.129 m and v = +3.415 m/s.

(a) What is the amplitude of the oscillations?

(b) What was the position of the mass at t = 0 s?

Q2. The focal point of a lens is the location of the image of a point of object at infinity." Discuss the notion of infinity in real terms as it applies to object distances. Could you think of a simple method for determining the focal length of a converging lens?

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