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Questions and Answers
The centre of gravity of an object is the point where the sum of all gravitational forces acting on the body is zero.
The centre of gravity of an object is the point where the sum of all gravitational forces acting on the body is zero.
False (B)
If a body in stable equilibrium is slightly displaced, it will return to its original position.
If a body in stable equilibrium is slightly displaced, it will return to its original position.
True (A)
A tall, narrow vase will have a lower centre of gravity, making it more stable than a short, wide vase.
A tall, narrow vase will have a lower centre of gravity, making it more stable than a short, wide vase.
False (B)
In neutral equilibrium, a body will return to its original position after being slightly displaced.
In neutral equilibrium, a body will return to its original position after being slightly displaced.
A wider base of support decreases the stability of an object because it increases the moment arm.
A wider base of support decreases the stability of an object because it increases the moment arm.
The lower the centre of gravity of a body, the greater its stability.
The lower the centre of gravity of a body, the greater its stability.
A racing car designed with a high centre of gravity enhances its stability during high-speed turns.
A racing car designed with a high centre of gravity enhances its stability during high-speed turns.
If the line of action of the weight of an object falls outside its base of support, the object will topple.
If the line of action of the weight of an object falls outside its base of support, the object will topple.
A bus with a narrow base is more stable on sharp turns compared to a bus with a wide base.
A bus with a narrow base is more stable on sharp turns compared to a bus with a wide base.
An object in unstable equilibrium, when slightly displaced, will always accelerate back towards its original position due to gravity.
An object in unstable equilibrium, when slightly displaced, will always accelerate back towards its original position due to gravity.
Flashcards
Centre of Gravity
Centre of Gravity
The point where the entire weight of the body is considered to be concentrated.
Stable Equilibrium
Stable Equilibrium
Returns to its original position after small displacement.
Unstable Equilibrium
Unstable Equilibrium
Does not return to its original position after a slight displacement.
Neutral Equilibrium
Neutral Equilibrium
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Stability Factors
Stability Factors
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Large Base Area
Large Base Area
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Low Centre of Gravity
Low Centre of Gravity
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Racing car design
Racing car design
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Bus design
Bus design
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Study Notes
- Centre of gravity is the point where the entire weight of the body is considered to be concentrated
- The weight of the body acts vertically downwards from this point
Equilibrium
- A body is in stable equilibrium when it returns to its original position after being slightly displaced
- A body is in unstable equilibrium when it does not return to its original position after being slightly displaced
- A body is in neutral equilibrium when it remains in the new position after being slightly displaced
Factors Affecting Stability
- The stability of a body depends on the height of its centre of gravity and the area of its base
- Greater the area of the base, more is the stability
- Lower the centre of gravity, more is the stability
Examples
- A racing car is made with a low centre of gravity to increase its stability
- A bus is made with a wide base to increase its stability
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