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प्रश्न
Why is it easier to open a door by applying the force at the free end of it?
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उत्तर १
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.
उत्तर २
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.
संबंधित प्रश्न
Give one example in the given cases:-
A force moves a stationary body
Define 1 kgf how is it related to Newton?
How can you feel a force of 1 N?
A cricket ball of mass 100 g strikes the hand of a player with a velocity of 20 ms-1 and is brought to rest in 0.01 s calculate
1) the force applied by the hand of the player.
2) the acceleration of the ball
How do you define force? What are the forces acting on a man standing in a lift? If the lift moves down with an acceleration of 2 ms−2, what is the net force on the man if his mass is 50 kg?
Give two examples to verify that a force tends to change the static condition of a body.
Which of the following statement is not correct for an object moving along a straight path in an accelerated motion?
Two friends on roller-skates are standing 5 m apart facing each other. One of them throws a ball of 2 kg towards the other, who catches it, How will this activity affect the position of the two? Explain your answer.
Assertion: Force is defined as a push or pulls acting on a body.
Reason: CGS unit of force is the newton.
Briefly explain how we experience a force in our daily life.
