Advertisements
Advertisements
Question
Imagine that an object is falling through a long straight glass tube held vertical, air has been removed completely from the tube. The object does not touch the walls of the tube. Will the object experience any force of friction?
Solution
No, the object will not experience any frictional force because to experience the force of friction, two surfaces must be there and there is only one surface in this case.
APPEARS IN
RELATED QUESTIONS
Friction produces ______.
A toy car released with the same initial speed will travel farthest on
Which of the following statements is incorrect?
In a large commercial complex there are four ways to reach the main road. One of the path has loose soil, the second is laid with polished marble, the third is laid with bricks and the fourth has gravel surface. It is raining heavily and Paheli wishes to reach the main road. The path on which she is least likely to slip is
Is there a force of friction between the wheels of a moving train and iron rails? If yes, name the type of friction. If an air cushion can be introduced between the wheel and the rail, what effect will it have on the friction?
