A mass attached to a spring oscillates with a frequency of 3 Hz. What is the spr

Practice Questions

Q1
A mass attached to a spring oscillates with a frequency of 3 Hz. What is the spring constant if the mass is 2 kg? (2023)
  1. 18 N/m
  2. 12 N/m
  3. 6 N/m
  4. 9 N/m

Questions & Step-by-Step Solutions

A mass attached to a spring oscillates with a frequency of 3 Hz. What is the spring constant if the mass is 2 kg? (2023)
  • Step 1: Identify the given values. The frequency (f) is 3 Hz and the mass (m) is 2 kg.
  • Step 2: Write down the formula for frequency in terms of spring constant (k) and mass (m): f = (1/2π)√(k/m).
  • Step 3: Rearrange the formula to solve for the spring constant (k): k = (2πf)² * m.
  • Step 4: Substitute the values of f and m into the formula: k = (2π*3)² * 2.
  • Step 5: Calculate (2π*3): First, calculate 2π which is approximately 6.2832, then multiply by 3 to get approximately 18.8496.
  • Step 6: Square the result from Step 5: (18.8496)² ≈ 355.305.
  • Step 7: Multiply the squared result by the mass (2 kg): k ≈ 355.305 * 2 ≈ 710.61 N/m.
  • Step 8: Finalize the calculation: The spring constant k is approximately 710.61 N/m.
  • Simple Harmonic Motion – The question tests understanding of the relationship between frequency, mass, and spring constant in oscillatory motion.
  • Spring Constant Calculation – It assesses the ability to manipulate the formula for frequency in terms of mass and spring constant.
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