TestUstad

The total energy of a pendulum is 50J. What will be its kinetic energy at the mean position?

Correct answer: A. 50J

  • A. 50J
  • B. 25J
  • C. 0J
  • D. None of these

Explanation

At the mean position, the pendulum's velocity is maximum, and its potential energy is minimum (zero). Therefore, the total energy at the mean position is entirely kinetic energy.Energy Conservation in SHM:The total mechanical energy of a simple harmonic oscillator (like a pendulum) remains constant throughout its motion. This means that the sum of its kinetic energy (KE) and potential energy (PE) is always equal to the total energy (E):E = KE + PEAt the mean position, PE = 0. Therefore, the kinetic energy at the mean position is equal to the total energy:KE = E = 50J

Written and checked by , contributorLast updated
Report an error

The more specific you are, the faster it gets fixed. A source beats an opinion.

Prefer email? [email protected]

About Simple Harmonic Motion

Simple harmonic motion is oscillation in which acceleration is directly proportional to displacement and directed toward the equilibrium position. Work includes displacement, velocity, acceleration, phase, period, frequency, amplitude and energy, with applications to springs and simple pendulums. The restoring force and the conditions for SHM distinguish it from general periodic motion.

Practise Waves

1,281 free Waves MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.

Start a free Waves testAll Waves MCQs

Discussion

Stuck on an option, or know a faster way to get there? Ask or explain it here.

No comments yet. Be the first to explain this one.

Exams that ask Physics questions like this

Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.

Lecturer Physics Test Physics80 MCQsSubject Specialist Physics Test Physics80 MCQsNET Physics60 MCQsNUMS Physics40 MCQsDUHS Physics36 MCQsETEA MDCAT Physics36 MCQsKMU Physics36 MCQsMDCAT Physics36 MCQsECAT Physics30 MCQsETEA Engineering Admission Test Physics30 MCQsGIKI Physics30 MCQsNED Physics30 MCQsPIEAS Physics30 MCQsPMD Physics25 MCQsBSN Entry Test Physics20 MCQsPAF Airman Physics15 MCQs

More Simple Harmonic Motion questions

If the length of simple pendulum is increased to 6 times and g reduces to 3 times, then time period will be?

A simple pendulum with spring constant 500n/m oscillates between two points x1 = 10cm and x2 = 15 cm. What is total mechanical energy at 10cm?

Seconds pendulum has time period

If the length of a pendulum is 4 times g, its time period will be

If spring constant is 2 and displacement is also 2 then sum of KE and PE?

What is the kinetic energy at the extreme position during SHM?