Advertisements
Advertisements
Question
Why is it easier to open a door by applying the force at the free end of it?
Advertisements
Solution 1
It is easier to open a door by applying the force at the free end of it because of the larger the perpendicular distance, less is the force needed to turn the body.
Solution 2
If we open or shut a door, we need to apply less force at the free end because according to the formula of the moment of force
M = Force × Perpendicular distance of force from axis of rotation
The magnitude of the force is inversely proportional to the perpendicular distance of force from the axis of rotation. Thus, as the distance between the point of force application and hinge will increase, the amount of force required to open the door will decrease.
APPEARS IN
RELATED QUESTIONS
The separation between two masses is reduced to half. How is the magnitude of the gravitational force between them affected?
Give one example in the given cases:-
A force changes the size of a body
Define 1 kgf how is it related to Newton?
Complete the following:
Force = mass x ............
A truck of mass `5 xx 10^3` kg starting from rest travels a distance of 0.5 km in 10 s when a force is applied on its calculate:
1) the acceleration acquired by the truck and
2) the force applied
A man can open a nut by applying a force of 150 N by using a lever handle of length 0.4 m. What should be the length of the handle if he is able to open it by applying a force of 60 N?
A push or pull on an object is called force.
In ‘tug of war’ when two teams pull equally hard, then what happens?
The trees are greenish. They are greenish at the tip too. How does the water rise upward in a tree or plant against the force of gravity?
The moon attracts Earth with a force of 1020 N, and then the force with which the Earth attracts the moon is ______.
