Gears

What do we call the gear connected to the input power source, such as a motor?

• Driven Gear

• Bigger Gear

• Smaller Gear

• Driving Gear

What do we call the gear connected to the output, such as a wheel or mechanism in a system?

• Driving Gear

• Driven Gear

• Bigger Gear

• Smaller Gear

When you have a system with a driving gear that is _______ than the driven gear you will increase torque and decrease speed.

• smaller

• bigger

• same size

• thicker

Tags

NGSS.MS-PS2-1

When you have a system with a driving gear that is LARGER than the driven gear you will ___________________

• decrease Speed and decrease Torque

• increase Speed and increase Torque

• increase Speed and decrease Torque

• decrease Speed and increase Torque

The relationship between the numbers of teeth on two meshing gears used to transmit motion. It reflects the change in mechanical advantage resulting from the gears.

• Gear pitch

• Tooth decay

• Gear ratio

• aspect pitch

Tags

NGSS.MS-PS2-1

True or False: Two meshed gears always rotate in opposite directions

• True

• False

When gears are equal in size, what is the gear ratio?

• 1:2
• 1:3
• 2:5
• 1:1

Ratio of moments = ratio of the number of teeth = ratio of radii

• True

• False

The driving wheel has 12 teeth, the driven wheel has 48 teeth...

• The larger driven wheel will move 4 times as quick as the smaller driving wheel

• The larger driven wheel will move a quarter of the speed of the smaller driving wheel

• The larger driven wheel will have 4 times the turning force compared to the smaller driving wheel

• The larger driven wheel will have a quarter of the turning force compared to the smaller driving wheel

Tags

NGSS.MS-ETS1-1

NGSS.MS-PS3-5

A larger wheel of radius 40cm has a moment of 160Nm and is being driven by a smaller wheel of 20cm radius. What is the moment about the smaller wheel?

• 20 Nm

• 40 Nm

• 80 Nm

• 10 Nm