Question

Viscous force is somewhat like friction as it opposes, the motion and is non-conservative but not exactly so, because

• A. It is velocity dependent while friction is not
• B. It is velocity independent while friction is not
• C. It is temperature dependent while friction is not
• D. It is independent of area is like surface tension while friction is dependent

Answer 1

Answer: (A), (C)

The correct options are
A It is velocity dependent while friction is not
C It is temperature dependent while friction is not

Viscous force is somewhat like a frictional force but not exactly the same because it differs from it due to the two main following statements:

i. Viscous force is velocity dependent while frictional force is not.
ii. Viscous force is temperature dependent while frictional force is not.
So, option (a) and (c) are correct.