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प्रश्न
What is a force?
उत्तर
Force is that external agency which tends to change the state of rest or the state of motion of a body.
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संबंधित प्रश्न
Classify the following amongst contact and non - contact forces:
Frictional force
Normal reaction force
Force of tension in a string
Gravitational force
Electrostatic force
Magnetic force
A ball is hanging by string from the ceiling of the roof. Draw a neat labelled diagram showing the forces acting on the ball and the string.
Name the physical quantity that causes motion in a body.
A ball is moving on a perfectly smooth horizontal surface. If no force is applied on it, then will its speed decrease, increase or remain unchanged?
Name the S.I. unit of force and define it .
What is the ratio of SI to CGs units of force?
In the circuit shown in figure, when the key is closed, the compass needle placed in the match box deflects. Name the force which cases this deflection.
A gas filled balloon moves up. Is the upward force acting on it larger or smaller than the force of gravity?
A man is pushing a cart down a slope. Suddenly the cart starts moving faster and he wants to sloyy it down. What should he do?
Figure shows a car sticking to an electromagnet. Name the forces acting on the car. Which one of them is larger?
