The total energy of the body executing SHM is E. The kinetic energy is one-third of the total energy when the displacement of the body having amplitude (a) is _______.

  1. a/√2
  2. a/√5
  3. a/√7

Answer (Detailed Solution Below)

Option 1 :
Free
Agniveer Navy SSR Full Test - 01
100 Qs. 100 Marks 60 Mins

Detailed Solution

Download Solution PDF

CONCEPT:

  • The total energy in simple harmonic motion is the sum of its potential energy and kinetic energy.
  • The law of conservation of energy states that energy can neither be created nor destroyed. Therefore,  the total energy in simple harmonic motion will always be constant

Total energy = kinetic energy + potential energy

Total energy in S.H.M. is ET = ½ m ω2 a2; where a = amplitude, m = mass

Potential energy P.E. = ½ m ω2 y2 , where y = displacement

Kinetic energy K.E. = ½ m v2, where v is the velocity of the wave.

CALCULATION:

  • Total energy = kinetic energy + potential energy


Given that:

 ,​

The total energy in S.H.M. is given by:

Where a = amplitude, m = mass

Potential energy is given by: 

Where y = displacement

The total energy is:

⇒ ET = K.E.+ P.E

Latest Indian Navy Agniveer SSR Updates

Last updated on Jun 20, 2025

-> The Indian Navy SSR Agniveeer Merit List has been released on the official website.

-> The Indian Navy Agniveer SSR CBT Exam was conducted from 25th to 26th May 2025.

->The application window was open from 29th March 2025 to 16th April 2025.  

-> The Indian Navy SSR Agniveer Application Link is active on the official website of the Indian Navy.

.->Only unmarried males and females can apply for Indian Navy SSR Recruitment 2025.

-> The selection process includes a Computer Based Test, Written Exam, Physical Fitness Test (PFT), and  Medical Examination.

->Candidates Qualified in 10+2 with Mathematics & Physics from a recognized Board with a minimum 50% marks in aggregate can apply for the vacancy.

-> With a salary of Rs. 30,000, it is a golden opportunity for defence job seekers.

-> Candidates must go through the Indian Navy SSR Agniveer Previous Year Papers and Agniveer Navy SSR mock tests to practice a variety of questions for the exam.

More Oscillations Questions

Hot Links: teen patti vip teen patti master old version teen patti joy vip teen patti star login