Question

2
Tick (~) the correct answer :
1. Force acting between two surfaces with each other is called :
(a) mechanical force
(b) force of
(c) power
(d) pressure
2. Substances are called lubricants which are used to :
(a) increase friction
(b) decreas
(c) increase or decrease friction
(d) none o
3. Friction due to fluids is called :
(a) drag
(b) force
(c) pressu
4. Rolling friction is smaller than :
(a) sliding friction (b) static friction
(c) fluid f​

Answer 1

Answer:

1) a-mechanical force

2)a-increase friction

3) c-pressure

4) a-sliding friction

Explanation:

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Answer 2

Answer:

1. b) force of
2. b) decrease
3. a)drag
4. a) sliding friction