The center of gravity (CG) is the average location of an object's weight. It's also the point through which gravity acts on an object. 

The center of gravity is the balance point of an object. It's the point where the distribution of weight is equal in all directions. 
In a uniform gravitational field, an object's center of gravity and center of mass are the same. The center of gravity is also the point about which the algebraic sum of moments of weights of all the particles constituting the body is zero. 
 

Workshop Calculation and Science Practice Test: Centre of Gravity

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25 Questions

1. Center of gravity of a thin hollow cone lies on the axis at a height of a

None of theseOne-fourth of the total height above baseOne-half of the total height above baseOne-third of the total height above base

2. Where the center of gravity of a circle lies?

At its centreAnywhere on its diameterAnywhere on its radiusAnywhere on its circumference

3. What is the centre of gravity of a sphere?

At the radiusAt the centreAt the diameterOn the circumference

4. The centre of gravity is the ratio of ________ to _________

The addition of centroid and weight to the total weightThe product of centroid and weight to the total massThe subtraction of centroid and weight to the total weightThe product of centroid and weight to the total weight

5. Where will be the centre of gravity of the T section shown in the figure?

At 5cmAt 6.5cmAt 9.25cmAt 8.545cm

6. Where will be the center of gravity of the L-section shown in the figure?

(2.24,3.68)(1.28,2.64)(1.64,3.28)(1.45,3.24)

7. The center of gravity of a triangle lies at the point of

Intersection of bisector of anglesconcurrence of mediansIntersection of diagonalsIntersection of its altitudes

8. Where is the centre of gravity in ʹTʹ section?

6.5 cm7.5 cm8.545 cm8.02 cm

9. What is the centre of gravity of the object?

90.6 mm90.0 mm89.2 mm89.25 mm

10. What is the CG of an isosceles triangle of base 20 cm and side 40?

19.36 cm12.90 cm38.72 cm13.28 cm

11. Which state of equilibriums example is A cone resting on its tip?

HorizontalStableUnstableNeutral

12. What is the centre of gravity of the square?

(30, 20)(30, 30)(25, 30) (20,30)

13. The center of gravity of a uniform lamina lies at

The center of bottom portionAll of theseThe midpoint of its axisThe bottom surface

14. What is the centre of gravity of the conical object?

44.3 mm42.3 mm42.5 mm43.85 mm

15. Where will be the centre of gravity of the T section shown in the figure?

At9.25cmAt8.545cmAt5cmAt6.5cm

16. What is the name of the point at which all the weight of the body concentrated?

Centre of gravityCentral pointCentroidInitial point

17. Where the center of gravity of a circle lies?

Anywhere on its diameterAt its centreAnywhere on its radiusAnywhere on its circumference

18. Where will be the center of gravity of the following section will lie In coordinates?

(6,1.5)(6,3)(6,6)(1.5,3)

19. What is the centre of gravity of a rectangular body?

Longer side of rectangleShorter side of rectangleAt the cornersAt the point of intersection of its diagonals

20. Where will be the centre of gravity of a uniform rod lies?

Depends upon its materialAt its middle pointAt its centre of its cross sectional areaAt its end

21. The point through which the whole weight of the body acts is called _____________

Center of gravityCentral pointInertial pointCentroid

22. Which of the following laminas do not have centroid at its geometrical centre?

Equilateral triangleRight angled triangleCircleNone of these

23. What is the centre of gravity of the lamina?

1.55 cm1.45 cm2.0 cm1.5 cm

24. What is the centre of gravity of a solid hemisphere from its base?

3r/83r/4r/24r/5

25. Which one of the following geometrical shape’s centre of gravity lies from its base is 1/3 of its height?

RhombusConeTriangleSquare