What is the principle of conservation of energy in relation to gears?

• Energy can be created and destroyed in a gear system.

• The input energy in a gear system is always greater than the output energy.

• Energy cannot be created or destroyed; in a gear system, the input energy equals the output energy, accounting for speed and torque changes.

• Gears can operate without any energy input.

Tags

NGSS.MS-PS3-5

What is torque?

• A measure of the rotational force applied to an object, typically measured in Newton-meters (Nm).

• The speed at which an object rotates around an axis.

• The amount of energy required to move an object a certain distance.

• The force that opposes the motion of an object.

If a driving gear has 24 teeth and a driven gear has 72 teeth, what happens to the torque of the driven gear?

• The torque of the driven gear will decrease.

• The torque of the driven gear will remain the same.

• The torque of the driven gear will increase.

• The torque of the driven gear will fluctuate.

What is the effect of increasing the size of the driven gear?

• It will increase its speed and decrease its torque.

• It will decrease its speed but increase its torque.

• It will have no effect on speed or torque.

• It will increase both speed and torque.

Tags

NGSS.MS-ETS1-1

If a gear train has a gear ratio of 1:3, what does this mean?

• It means that for every one rotation of the driving gear, the driven gear will rotate one-third of a turn.

• It means that the driven gear will rotate three times for every one rotation of the driving gear.

• It indicates that the driving gear is three times larger than the driven gear.

• It means that the gear train is not functioning properly.

How do you calculate the gear ratio?

• Gear ratio = Number of teeth on driving gear / Number of teeth on driven gear.

• Gear ratio = Number of teeth on driven gear / Number of teeth on driving gear.

• Gear ratio = Number of teeth on both gears combined.

• Gear ratio = Number of teeth on driving gear - Number of teeth on driven gear.

What is the relationship between speed and torque in gears?

• As speed increases, torque decreases, and vice versa.

• Speed and torque are directly proportional to each other.

• Increasing speed results in an increase in torque.

• Torque has no relation to speed in gears.

If a driving gear has 72 teeth and the driven gear also has 72 teeth, what is the speed relationship?

• The driven gear will turn at the same speed as the driving gear.

• The driven gear will turn twice as fast as the driving gear.

• The driven gear will turn half as fast as the driving gear.

• The driven gear will not turn at all.

Tags

NGSS.MS-PS3-1

What is the effect of decreasing the size of the driving gear?

• It will increase its speed but decrease its torque.

• It will decrease its speed and increase its torque.

• It will have no effect on speed or torque.

• It will increase both speed and torque.

Tags

NGSS.MS-ETS1-1

How does the number of teeth on a gear affect its speed?

• The speed of a gear is directly proportional to the number of teeth it has.

• More teeth mean faster rotation, while fewer teeth mean slower rotation.

• The speed of a gear is inversely proportional to the number of teeth it has.

• The number of teeth has no effect on the speed of the gear.

Tags

NGSS.MS-PS2-2