1 A force of 20 N acts at a perpendicular distance of 0.5 m from a pivot. What is the moment of the force? A 40 N m B 10 N m C 20.5 N m D 0.025 N m
2 A racing car is made stable during turns mainly by: A Raising its centre of gravity B Using a wide base and low centre of gravity C Increasing its height above the ground D Reducing its weight to zero
3 A box is pushed with a force of 10 N towards east and 10 N towards west. The box is: A In dynamic equilibrium B In static equilibrium C Accelerating towards east D Accelerating towards west
4 The moment of a force is directly proportional to: A The magnitude of the force only B The moment arm only C The product of force and moment arm D The sum of force and moment arm
5 A force of 10 N is applied at a distance of 2 m from the pivot. What is the moment of the force? A 5 N m B 10 N m C 20 N m D 40 N m
6 Two forces of 6 N and 8 N act at right angles to each other. The magnitude of their resultant is: A 2 N B 10 N C 14 N D 48 N
7 The moment of a force is calculated as: A Force × distance B Force × velocity C Force × time D Force ÷ distance
8 The moment of a force is given by the product of the force and the: A Force arm B Moment arm C Mass D Velocity
9 A force of 10 N makes an angle of 30° with the x-axis. What is its vertical component Fy? A 5 N B 8.66 N C 10 N D 17.32 N
10 A couple consists of two forces which are: A Equal in magnitude, same direction, different lines of action B Equal in magnitude, opposite direction, same line of action C Equal in magnitude, opposite direction, different lines of action D Unequal in magnitude, opposite direction, different lines of action
11 Two unlike parallel forces of 10 N and 4 N act on a body. What is the magnitude of their resultant? A 14 N B 6 N C 40 N D 2.5 N
12 A body is said to be in neutral equilibrium if, when slightly displaced, its centre of gravity: A Rises B Falls C Remains at the same height D Moves horizontally only
13 Two forces of 6 N and 4 N act on a body in the same direction. What is the magnitude of their resultant? A 2 N B 4 N C 10 N D 24 N
14 For a body to be in equilibrium under the action of several coplanar forces, the sum of clockwise moments about any point must be: A Greater than anticlockwise moments B Less than anticlockwise moments C Equal to anticlockwise moments D Zero only if no forces act
15 A body is in stable equilibrium when its centre of gravity is: A Raised on slight displacement B Lowered on slight displacement C Unchanged on slight displacement D Shifted outside the base
16 The resultant of two perpendicular forces of 6 N and 8 N has magnitude: A 2 N B 10 N C 14 N D 48 N
17 The perpendicular distance from the pivot to the line of action of force is called: A Moment arm B Force arm C Couple arm D Torque arm
18 A couple produces: A Only linear motion B Only rotational motion C Both linear and rotational motion D No motion at all
19 A see-saw is balanced when the clockwise moment is: A Greater than the anticlockwise moment B Less than the anticlockwise moment C Equal to the anticlockwise moment D Twice the anticlockwise moment
20 A body is in neutral equilibrium if after a small displacement it: A Returns to its original position B Moves away from its original position C Stays in its new position D Falls down
21 When a body is in equilibrium, the net torque acting on it must be: A Maximum B Zero C Equal to the net force D Constant
22 According to the principle of moments for a body in equilibrium, the sum of clockwise moments about a point is: A Greater than anticlockwise moments B Less than anticlockwise moments C Equal to anticlockwise moments D Zero
23 A racing car is made low and wide mainly to: A Increase its speed B Lower its centre of gravity and increase stability C Reduce its mass D Increase its air resistance
24 The centre of gravity of a triangular lamina is located at the intersection of its: A Sides B Altitudes C Medians D Angles
25 A cone standing on its base is an example of: A Stable equilibrium B Unstable equilibrium C Neutral equilibrium D Dynamic equilibrium