rev_test_ch15 - d When does the velocity 1 st reach its...

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Physics 1, East Los Angeles College Chapter 15 Review Sheet Mr. V. Kiledjian 1) If x = .4sin(5t + .2) and K 1 (200 N/m) and K 2 (160 N/m) are two springs placed end to end. a) What is the mass of the block? b) What is the x i , v i , a i ? c) What is the absolute value of the maximum values of x, v, a, K.E., U? d) What is the period T and frequency f of the block? e) How many seconds will it take the block to 1 st reach the most compressed position? 2) If the initial position of a block is x = .16 meters and its initial velocity is - 5 m/s, and K = 100 N/m and M = 3 kg. a) What is the angular frequency ω , frequency f, period T? b) What is the amplitude A, phase angle θ ? c) Write the general equations for x, v, and a.
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Unformatted text preview: d) When does the velocity 1 st reach its maximum value? 3) a) If a string is 1.25 meters long and it makes 10 revolutions in 25.3 seconds on some planet, calculate the g of that planet. b) A ruler is 1.8 meters long and is being swung about a pivot point 0.2 meters from the top of the ruler. Calculate the period of rotation T. c) A solid spherical ball is 0.3 m in radius and is making simple harmonic motion about a pivot point at its edge. Calculate the period T of this sphere. d) A solid cylindrical disk is hanging from a string whose torsional constant is 8 N-m. The mass of the disk = 2 kg and its radius is 0.2 meters. Calculate the period T of its motion....
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