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Friction

Total questions: 12

Worksheet time: 6mins

Name
Class
Date
1.

is an instrument that contains a disc, called a rotor, rotating about an axis at a high speed, which gives it two important properties: rigidity and precession.

a)

precession

b)

pitch

c)

gyroscope

d)

Rotor mass

2.

Which one of these is NOT a part of the gyroscope?

a)

gyroscope frame

b)

gimbal

c)

roll attitude

d)

spin axis

e)

Rotor

3.

What are the two essential properties of the gyroscope?

a)

gyroscope frame and gimbal

b)

rigidity and precession

c)

Rotor and gimbal

d)

pitch and roll attitude

4.

if an external force is applied to change the direction of the rotor spin axis, the gyro resists the change and moves the force at right angles to the direction originally applied.

a)

Rigidity

b)

gimbal

c)

spin axis

d)

precession

5.

... is the ability of a spinning rotor to retain its axis in a fixed direction in space unless acted on by external forces.

a)

Rigidity

b)

gimbal

c)

spin axis

d)

precession

6.

The use of gyroscope is

a)

to provide an input of actual aircraft hight with respect to the horizon.

b)

to provide an output of actual aircraft speed with respect to the horizon.

c)

to provide an output of actual aircraft pitch and roll attitude with respect to the horizon.

7.

is the force resisting the relative motion of materials rubbing against each other.

a)

Sliding Friction

b)

Starting Friction

c)

Friction

d)

Rolling Friction

8.

is present as a body slides over another surface.

a)

Sliding Friction

b)

Starting Friction

c)

Friction

d)

Rolling Friction

9.

is present between a rolling body and the surface on which it rolls.

a)

Sliding Friction

b)

Starting Friction

c)

Friction

d)

Rolling Friction

10.

is present when a body, which has been at rest, just begins to move under the application of a force.

a)

Sliding Friction

b)

Starting Friction

c)

Friction

d)

Rolling Friction

11.

F=μNF=\mu N

is the formula of ........

a)

Friction

b)

precession

c)

gimbal

d)

Momentum

12.

Starting friction is the smallest and rolling friction is the greatest.

a)

True

b)

False