## Workshop Calculation and Science

#### Module 2: Center of Gravity

1: Which affects the centre of gravity of the object?
A : Weight

B : Mass
C : Density
D : Shape

2: What is the name of the point at which all the weight of the body concentrated?
A : Initial point

B : Centre of gravity
C : Centroid
D : Central point

3: Where the centre of gravity of a circle lies?

A : At its centre
B : Any where on its radius
C : Any where on its circumference
D : Any where on its diameter

4: What is the centre of gravity of a right circular cone from its base?
A : h/2
B : h/3

C : h/4
D : h/5

5: What is the centre of gravity of a rectangular body?
A : Longer side of rectangle
B : Shorter side of rectangle

C : At the point of intersection of its diagonals
D : At the corners

6: What is the centre of gravity of a solid hemisphere from its base?
A : 4r/5

B : 3r/8
C : 3r/4
D : r/2

7: What is the centre of gravity of a sphere?

A : At the centre
B : On the circumference
C : At the diameter

8: Which state of equilibriumʹs example is A cone resting on its tip?
A : Stable
B : Neutral

C : Unstable
D : Horizontal

9: Which one of the following geometrical shapeʹs centre of gravity lies from its base is 1/3 of its height?
A : Square
B : Rhombus

C : Triangle
D : Cone

10: Which state of equilibriumʹs example is, A cone resting on its base?
A : Un-stable
B : Neutral

C : Stable
D : Bothe A and B

11: Where is the centre of gravity in ʹTʹ section?

A : 8.545 cm
B : 6.5 cm
C : 8.02 cm
D : 7.5 cm

12: What is the centre of gravity of the rectangle?
A : (6,3)
B : (6,6)

C : (6,1.5)
D : (1.5, 3)

13: What is the centre of gravity of the lamina?
A : 1.55 cm

B : 2.0 cm
C : 1.5 cm
D : 1.45 cm

14: What is the centre of gravity of the object?

A : 90.6 mm
B : 90.0 mm
C : 89.2 mm
D : 89.25 mm

15: What is the centre of gravity of the conical object?
A : 42.5 mm

B : 44.3 mm
C : 42.3 mm
D : 43.85 mm

16: What is the centre of gravity of the square?
A : (30, 20)
B : (20,30)

C : (30, 30)
D : (25, 30)

17: What is the centre of gravity of the cone base 10cm and height 50 cm?
A : 10.5 cm

B : 12.5 cm
C : 11.25 cm
D : 12.75 cm

18: What is the centre of gravity of a semi circle of diameter 12 cm?
A : 2.24 cm
B : 2.54 cm
C : 3.25 cm
D : 2.75 cm