Work done on lifting/falling things - Solved numerical | Work & Energy | Physics | Khan Academy

Let's calculate 2 problems on work done on lifting & falling bodies.

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Created by Mahesh Shenoy

[netad]

I can never forget this voice. I listened to it a lot for my physics courses in high school. So happy i finally got rid of transformers

[jsathibabu]

Mahesh sir l am big fan of your writing really I watch the videos for your hand writing also really super👌👌

[juliakkristinsson]

In the last example, why is it that you plug in acceleration (10m/s) if the barbell is moving at a constant speed? And if it is moving at a constant speed, than there shouldn't be any force acting upon it whilst in that state?

[heyitsmanisha]

4:39 bro why we not change 10 m into km????

[psethsandhyagupta]

This was amazing but you should make more numericals☺

[dharanishree]

Sir, what happens to the energy that is lost in moving downwards? (Second question)