1.
A person applies some mustard oil on his hand. which of the following object will most difficult for him to hold in his hand?
2.
The frictional force exerted by fluids is called
4.
Which of the following does not help to reduce friction
6.
Whenever the surfaces in contact tend to move or move with respect to each other, the force of friction comes into play
7.
What does air resistance do on falling objects
9.
When a force is applied on a body and the body remains at rest the frictional force acting on a body is called
10.
Examples of one non lubricant is
11.
The sholes of shoes and tyres of vehicles are treaded due to
12.
Frictional force depends on
13.
A toy car released with the same initial speed will travel farthest on
14.
The relation between weight and frictional force is
15.
What option(s) is/are responsible for walking?
16.
The direction of friction is always …. To the direction in which the object is moving
17.
Friction between two flat surfaces can be reduced by
18.
The SI unit of frictional force
19.
Fluid friction depends on
