⚫ Centre of Gravity and Stability
Explore the physics concept of centre of gravity and how it determines whether objects and structures are stable or unstable. This quiz focuses on identifying the centre of gravity in common objects, understanding the relationship between centre of gravity and base of support, and predicting stability in real-world structures. **What you'll learn:** - Define centre of gravity and locate it in different shapes and objects - Explain how centre of gravity affects structural stability - Predict stability based on base of support and centre of gravity height - Analyze why tall structures require wide bases for stability
Questions in this quiz
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- Question 1
Which of the following best defines the centre of gravity of an object?
- Question 2
The centre of gravity of a uniform sphere must always be located at its geometric center.
- Question 3
Where is the centre of gravity of a uniform rectangular block located?
- Question 4
For a person standing upright with arms at their sides, the centre of gravity is typically located
- Question 5
An object is stable when its centre of gravity is located outside its base of support.
- Question 6
Why does a wide base increase the stability of an object?
- Question 7
Compared to a tall, narrow cylinder standing upright, a short, wide cylinder with the same mass is
- Question 8
The centre of gravity of a hollow ring must be located at its geometric center, even though no material exists at that point.
- Question 9
A ball is balanced on top of a narrow stick. What will most likely cause the ball to fall off?
- Question 10
Why do tall buildings and skyscrapers often have very wide bases or massive foundations?
- Question 11
A triangular ruler is placed on a flat surface so it rests on one of its edges. The centre of gravity must be located
- Question 12
Lowering the centre of gravity of an object always makes it more stable.
- Question 13
A person leans forward while standing. Why must they adjust their base of support (move their feet) to maintain balance?
- Question 14
A pyramid has a square base with uniform density. Where is its centre of gravity located?
- Question 15
Two objects with the same mass but different shapes will always have the same stability when placed on the same surface.
- Question 16
Which statement best explains why a gymnast can balance on a beam?