Review Questions 1

Question 1

The inertia of a body is determined by its ?

Answer 1

Mass

Question 2

Changes in alititude (do/do not) affect inertia?

Answer 2

Do not

Question 3

Newton’s first law?

Answer 3

Inertia

Question 4

When a helicopter climbs at increasing airspeed its inertia(does/doesn’t not) change but its momentum (increases/decreases/ remains constant)

Answer 4

Does not change but momentum increases

Question 5

During a constant radius/steady rate turn at constant airspeed, all forces acting on the helicopter are/are not balanced and the aircraft is/is not in equilibrium

Answer 5

Are balanced and is not in equilibrium

Question 6

Ignoring fuel burn off as an aircraft continues to gain altitude, its mass does/does not vary, eath attractional force becomes stronger/weaker and the aircraft’s weight becomes less/ more

Answer 6

Does not vary. Becomes weaker and aircraft weight becomes less

Question 7

Assuming the mass of an aircraft and its airspeed remain constant, the centripetal force required to turn it on a reducing radius must be greater/smaller

Answer 7

Must be greater

Question 8

A couple consists of __ equal, parallel and opposite forces, and when these forces act and a point equal distance between the forces, a couple tends to produce ___

Answer 8

Two equal. Produce rotation

Question 9

The strength of a moment is increased/decreased when the lever arm increases

Answer 9

The moment increases

Question 10

Assuming your helicopter has a constant mass , its kinetic energy doubles/quadruples when its airspeed doubles?

Answer 10

Quadruples