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Mechanical energy is conserved in the presence of which of the following types of forces?Select all that apply.

A- electrostatic

B- frictional

C- magnetic

D- gravitational

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electrostatic and gravitational force

Mechanical energy remains constant (conserved) if only conservative forces act on the particles.

In this sense, the following forces are conservative:




While the Friction Force and the Magnetic Force are not.

According to this, mechanical energy is conserved in the presence of electrostatic and gravitational forces. Therefore the correct options are A and D.

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