(a)

Definition of friction, importance & problem of friction, Minimization method of friction ,Amon tons Law & static capstan method, Math.

(b)

Yes Mam, I want to learn more.

(c)

 I have understood the lecture

(d)

Friction is important in textile industry because, 

• Friction holds the fiber in a sliver and hence material does not break due to self weight.
• Friction helps in the drafting and drawing process.
• Uniform tension can be maintained in winding and warping because of friction.
• Friction helps in twisting during spinning.
• Friction modifies the luster and appearance of a cloth
• Friction makes more clean yarn.
• So friction is important in the textile industry.