Question

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In which of these situations, is mechanical energy being conserved? (Neglect, air resistance, friction, and breaking)
CHECK ALL THAT APPLY


A. Child on a swing


B. Pendulum


C. Bow and Arrow


D. Roller Coaster

Answer 1

Option A, B, C, D

Child on a swing, Pendulum, Bow and Arrow, Roller Coaster  is mechanical energy being conserved

Explanation:

Mechanical energy is the total of kinetic and potential energy in a thing that is employed to do a job.  A conservative force is a power like gravitation or a spring that “bends backward” energy that was conveyed by producing activity.  The friction and other non conservative forces, nevertheless, conservation of mechanical energy is surely conserved.

When one stretches or contracts an elastic object, one does act fronting the spring force, and that task finishes up saved as elastic potential energy.   Constantly shifting things up and down, producing variations in potential energy is termed as gravitational potential energy.

Here Child on a swing, Pendulum, Bow & Arrow, Roller Coaster in all there is the continuous conversion between gravitational/elastic potential energy and kinetic energy.