Question

Q.7 Define: i) Poisson's ratio ii) Coefficient of static friction
0.8 State any two methods to reduce friction​

Answer 1

Answer:

1.Poisson's ratio-the ratio of the proportional decrease in a lateral measurement to the proportional increase in length in a sample of material that is elastically stretched.

2.Coefficient of static friction - The coefficient of static friction is defined as the ratio of limiting friction to the normal reaction between the surfaces.

Ans-8-1.Make the surfaces little more smoother. ...

2. Lubrication is another way to make a surface smoother. ...