Advertisements
Advertisements
Question
In the following figure, a boy is shown pushing the box from right to left. The force of friction will act on the box
Options
from right to left (←)
from left to right (→)
vertically downwards (↓)
vertically upwards (↑)
Advertisements
Solution
from left to right (→)
Explanation:
The force of friction will be from left to right (→) because the friction force always acts in opposite direction to the motion.
APPEARS IN
RELATED QUESTIONS
Friction opposes the ______ between the surfaces in contact with each other.
Give examples to show that friction is both a friend and a foe.
Write true or false.
The sliding friction is more than the rolling friction.
Name the three kinds of friction.
Define static friction
A body needs a force F1 just to start moving on a surface, a force F2 to continue its motion and a force F3 to roll on the surface. What is
- the static friction
- sliding friction and
- rolling friction? State whether F2 is equal, less than or greater than (1) F1 and (2) F3.
Answer the following.
What do you understand by a force?
State if the following statement is true or false. Correct the statement if it is false.
If two forces acting in opposite directions on a body arc of equal magnitude, then the body will not move.
Answer the following in short.
Define force. Write its SI unit.
Fill in the blank.
The force of friction acting between two bodies in contact while at rest is known as ................ friction.
Tick the most appropriate answer.
Friction produces
Fill in the blank
Rolling friction is ............. than sliding friction.
State if the following statement is true or false. Correct the statement if it is false.
Friction has no relation with our walking or running.
Answer the following in a word or two or in a sentence.
Name the force responsible for opposing the motion between two bodies in contact.
A moving body comes to rest due to friction alone.
We have two identical metal sheets. One of them is rubbed with sand paper and the other with ordinary paper. The one rubbed with sand paper shines more than the other. Give reason.
Friction depends on the ______ of two surfaces in contact.
Assertion: We can live very happily if friction is not present in nature.
Reason: The airplane shape is streamlined to reduce the effort of frictional force.
Assertion: There is a danger of a vehicle skidding on a wet road.
Reason: The tires of the vehicle lose their grip on the road due to an increase in friction due to the presence of water on the road.
Complete the analogy.
Knot in a thread : ______ friction :: Ball bearing : ______ friction.
