27. A spring is attached to a 2.5-kg mass on the horizontal frictionless surface. The spring is initially stretched at a position of 7 cm. When it is released, the spring undergoes simple harmonic oscillation with a period of 1.65 seconds. Find the spring constant, k = ? a. 65.7 N/m b. 11.6 N/m c. 59.8 N/m d. 36.3 N/m

2. A certain pendulum has a period of 1.60s on earth. What is the period of this pendulum on a planet that has gravitational acceleration of 3.71 m/s?

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The spring return constant of a spring is 2000 N/m.  How much will it crash in metres if a 100 kg person drops 30 cm high on the spring. take g=9.8 m/s2.  Initially, the spring is neither stretched nor compressed.     A. 0.193 m     B.  0.542 m     C. 0.784 m     D.  0.948 m     E. 1.22 m

An oscillating mass attached to a horizontal spring glides back and forth along a frictionless surface in simple harmonic motion between positions x = +A and x = -A. At what position is the force on the mass due to the spring equal to zero? A. x = +A B. x = -A C. x = 0 D. x = A/2 O A OB O

39. A simple pendulum has a period of 1.50 s on earth. What is its period on the surface of the moon where the gravitational acceleration is approximately (1/6)*g? A. 3.67 s B. 9.00 s C. D. 0.612 s 0.250 s

9. A 55 g mass-is suspended from a vertical spring. What is the spring constant for this spring? T -x=0 Ax 5.8 cm 319 N/m a b. 9.3 N/m. c. 9.3x10' N/m d. 3.2 x 10 N/m

1) A linear spring has a spring constant of 20 N/m. How far would it have to be stretched to have a potential energy of 0.10 J? a. 0.10 m b. 200 m c. 0.0050 m d. 20 m e. 2.0 m

36. A1.00 kg mass is attached to a massless spring. After a mass, M, is attached to the spring and it reaches equilibrium, the spring is stretched 12.0 from its free length. From this position, the mass is pulled down an additional 20.0 cm, and released. Assume no loss due to friction. The force constant of the spring is M O A. 1 N/m B. 12 N/m OC. 20 N/m D. 54 N/m O E. 75 N/m F. 82 N/m O C. 98 N/m Back Save & Continue earch 99+ DELL

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