question_answer

Which of the following forces act on a fluid at rest?

1. Gravity force

2. Hydrostatic force

3. Surface tension

4. Viscous force

Select the correct answer using the codes given below:

A) 1, 2, 3 and 4                 

B) 1, 2 and 3

C) 2, and 4           

D) 1, 3 and 4