Length of path of contact,arc of contact,contact ratio

[@jm7476]

Great video, many thanks !!

[@vinay3q455]

Nice explaination sir
Tqqq very much

[@mr.nobody8784]

Very helpful sir

[@allahhuakhbar2718]

Thankyou sir it really helped me

[@ravirajv3641]

Sir,Commom normal line is to be TANGENT TO BOTH BASE CIRCLES

[@divakar221]

Nice lacture

[@naresh4547]

Sir nice meeru Inka cheyandi

[@balupindi1087]

Nice sir

[@princisingh8499]

I'm not understand this topic coz you are confused.

[@trevorsingh3551]

This is veeeeeerrrrrryyyyyyy helpful, Thank you sir

[@trevorsingh3551]

Will be very happy for you to explain a few example to apply the derivation