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Weight and Thrust

Authored by Christy Rodgers

Specialty

7th Grade

15 Questions

Used 4+ times

Weight and Thrust
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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

How is thrust produced in a drone?

As the propellers rotate, air pushes up through the drone’s center of gravity

The battery sends a signal to make the drone move up.

Gravity pulls the drone down and the drone pushes back up.

As the propellers rotate, they push air down and the air pushes back on the propellers.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The amount of thrust generated by a propeller depends upon _____.

Its size, shape and speed of rotation

Its shape and pitch

Its thrust constant and length

Its speed and composition

3.

DRAG AND DROP QUESTION

1 min • 1 pt

As rotational speed increases, thrust ​ (a)  

increases exponentially
increases at the same rate
decreases exponentially
decreases at the same rate

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

What do you know about a 7050 propeller?

It has a pitch of 7 inches and is 5 inches long.

It is 7 inches long and has a 5 inch pitch.

It is capable of rotating at 7050 RPS.

It will produce a thrust of 70.5 N at maximum speed.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Drag force is directly proportional to ____.

thrust

shorter and faster blades

velocity

longer and slower blades

6.

DRAG AND DROP QUESTION

1 min • 1 pt

The mathematical equation for torque is kt x ​ ​ (a)  

w2
gravity
mass
force

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What limits the maximum amount of torque a motor can produce?

The no load speed

The stall torque

The amount of current used to turn the motor

The type of controller used to operate the motors

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