Box sliding on incline with friction how to set it up

[@taylorbell1649]

These videos are seriously saving my life! thanks man!

[@eeposada]

thank you for the insightful video! Im a fan

[@tsegayharefe9929]

Help full honestly . What will be the friction on an ultra smooth surface

[@vaibhav2831]

Sir why aren't you uploading videos for 9 months