Saved Bookmarks
| 1. |
Q I. Answer in one word:1. The frictional force ----------- with increase in weight of the body.2. Ball bearing reduces the wear and tear of ______ parts of machine.3. Fluid friction can be minimised by giving suitable --------------- to bodiesmoving in fluid.4. What is the specific name of fluid friction?Q II. Answer in brief: -5. Give reason sliding friction is less than static friction.6. What is stream line shape? How does it help to reduce fluid friction?7. Why do we say friction is a necessary evil? Define the term wildlife |
Answer»
|
|