2.2.1 Mechanics - Statics ll

What is the standard unit of mass in the International System (SI)?

• Slug

• Kilogram (kg)

• Newton (N)

Which of the following correctly defines weight ?

• The mass of an object in kilograms

• The gravitational pull on an object

• The amount of matter in an object

In the context of moments, what does the term 'lever arm' refer to?

• The distance from the fulcrum to the point of force application

• The total weight of the object

• The angle of the applied force

What is the principle of moments when an object is in equilibrium?

• The sum of all forces must equal zero

• The sum of clockwise moments equals the sum of anticlockwise moments

• The lever arms must be equal

How is torque defined in relation to force and distance?

• Torque is the weight of an object multiplied by its mass

• Torque is the product of force and distance from the fulcrum

• Torque is the angle of rotation multiplied by the mass

Which method can be used to find the center of mass of an irregular object?

• Measuring the weight and dividing by distance

• Calculating the total mass and dividing by volume

• Suspending the object and using a plumb line

What is the significance of the datum in aircraft balance?

• It is the point from which all measurements are taken

• It is the center of gravity of the aircraft

• It is the point of minimum drag

How do you calculate the center of gravity (CG) of an aircraft?

• By calculating the total mass and dividing by the distance

• By using the principle of moments

• By averaging the positions of all weights

Which of the following describes a vector quantity?

• A quantity that is always positive

• A quantity that has both magnitude and direction

• A quantity that has only magnitude

What is the head-to-tail method used for in vector addition?

• To measure the length of a vector

• To calculate the angle of a vector

• To find the resultant of multiple vectors