Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
MHT CET Medical202624 April 2026Morning ShiftPhysicsOscillationsActual

If the length of seconds pendulum on the surface of the earth is 1 m. The length of the seconds pendulum on the surface of the planet is g_ planet = 7 2 g_ earth periodic time of the seconds pendulum is same on both planets

Options

  1. A1 7 m
  2. B2 7 m
  3. C7 2 m
  4. D7 m

Correct answer

C. 7 2 m

Step-by-step solution

The time period of a simple pendulum is given by T = 2 l g . Since the time period of a seconds pendulum is constant ( T = 2 s ), we have l g = constant . l_ earth g_ earth = l_ planet g_ planet Substituting the given values l_ earth = 1 m and g_ planet = 7 2 g_ earth : 1 g_ earth = l_ planet 7 2 g_ earth l_ planet = 7 2 m Answer: 7 2 m

Practice Oscillations on Quantrex Academy →

More from Oscillations

A simple pendulum oscillating in air has a period of 3 second. If it is immersed in a non-viscous liquid, having density = ( 1 x ) , where is the density of the material of the bob 2026Identify the equation that DOES NOT represent oscillatory motion. ( A is amplitude of motion) 2026The potential energy of a simple harmonic oscillator when the particle is at 3 4 A , is ( A is the amplitude of oscillation and E is the total energy of the oscillator) 2026Two SHM's x₁ = a ( t + 3 2 ) and x₂ = a ( t + ) are superimposed on each other. The resultant amplitude of motion is ( /2 = 1 and /2 = 0) 2026The average acceleration of a particle performing S.H.M. over two complete oscillations is (A = amplitude, = angular frequency) 2026The periodic time of a simple pendulum, (the simple pendulum with its bob is in air) is T. But if the bob of the simple pendulum is completely immersed in a non viscous liquid, who 2026The graph shows variation of displacement of a particle performing SHM with time t. which of the following statements is correct from the graph? 2026Two particles A and B execute S.H.M.s of periods T and 5T 2 . If they start from the mean position, then the phase difference between them when the particle A completes two oscilla 2026 Full Oscillations list All MHT CET Medical PYQs