The function of ball bearings in a wheel is :
A). To increase friction
B). To convert kinetic friction into rolling friction
C). To convert static friction into kinetic friction
D). Just for convenience
To increase friction
A ball bearing is a type of rolling-element bearing that uses balls to maintain the separation between the bearing races. The purpose of a ball bearing is to reduce rotational friction and support radial and axial loads. In general, it’s main function is to convert kinetic friction into rolling friction. It achieves this by using at least two races to contain the balls and transmit the loads through the balls.
2. The cover of a solar cooker is made of glass because
3. Metal tea pots have wooden handles?because
5. The term Isoneph indicates the lines of equal
6. When the velocity of a body is?doubled
7. The force which makes a vehicle to stop when break is applied is called
8. A piece of wood is held under water. The up thrust on it will be:
9. Which of the following are used for accurately measuring very small time intervals ?