GK
GENERAL SCIENCE
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
What does friction produce?
|
|
light
|
|
|
sound
|
|
|
heat
|
|
|
gravity
|
Explanation:
Detailed explanation-1: -Friction produces heat because it causes the molecules on rubbing surfaces to move faster and have more energy.
Detailed explanation-2: -Explanation: 1) If we rub our both hands together, heat is produced. 2) If a child is sliding down a slide, it can experience heat. 3) While riding a cycle, when we apply breaks, heat is produced.
Detailed explanation-3: -Frictional heating is generated by rotating one part against another under pressure (see Fig. 10.17). One part is fixed while the other is rotated with a controlled angular velocity.
There is 1 question to complete.