Is it true work is always done on a body when it experiences an increase in energy through a

mechanical influence?

see full answer

Your Exam Success, Personally Taken Care Of

1:1 expert mentors customize learning to your strength and weaknesses – so you score higher in school , IIT JEE and NEET entrance exams.

An Intiative by Sri Chaitanya

True

False

answer is A.

(Unlock A.I Detailed Solution for FREE)

Best Courses for You

JEE

NEET

Foundation JEE

Foundation NEET

CBSE

Detailed Solution

The above statement is True.
When work is done on a system, the mechanical energy will always vary, regardless of how.
Consider holding a helicopter in my hand. It's one of those little toys that are so relaxing.
When starting the copter, it naturally raises itself up. That represents a change in potential
energy while remaining constant in kinetic energy. This also results in a shift in mechanical
energy. Now that experimenting with the copter, the copter makes it swirl around from here to there while maintaining the same height. Now adjust the mechanical energy while
keeping the potential energy constant. The Kinetic energy was altered. In general, work done
on a body that just produces displacement without changing its potential energy is purely
kinetic energy. However, if the copter were to roll the ball up a hill, both kinetic and potential
energy would change, resulting in a complete change in mechanical energy.

Watch 3-min video & get full concept clarity