Parts
These make the gears, wheels, and servos spin
axles
This is without gears, it is a one-to-one ratio when the servo and the wheel are turning at the same rate.
Direct Drive
Formula, in words, for speed
Speed equals Distance divided by Time
Formula in words for velocity
velocity equals displacement divided by time
Robot is derived from what word?
Robota
This servos rotates 360 degrees
Continuous rotating servos
What will provide more power (torque) - A gear ratio of 2:1 or a gear ratio of 1:4?
1:4
Why is speed called a scalar quantity?
It only gives a value.
A walker starts at home, travels 1 square mile in 90 minutes and ends back at home. What is his/her velocity?
zero
What is torque
Pulling Power
Teeth
Middle gear said to increase power
Idler gear
A driver leaves home, drives 10 miles south and than returns home on the same route. What is his or her distance?
20 miles
A driver leaves home, drives 10 miles south and than returns home on the same route. What is his or her displacement?
zero
They can be expensive, they take work from people, they often need fixing, and they have to charge. This is _____________ of robots
Disadvantages of robots
Length of large axel
80 mm
Explain a 3:1 Gear Ratio
The servo gear (first gear) rotates one time for every three times that the wheel gear (last gear) rotates
Calculate speed in miles per hour if the distance traveled is 100 meters and the time is 25 seconds. Round to the nearest hundredth.
8.95 miles per hour
A runner leaves home and jogs 6 miles southeast for 60 minutes and than gets a ride home. What is the runner's velocity when he/she is running?
6 miles divided by 1 hour = 6 mi/hr southeast.
This is the measure of how far out of place an object is or where it is in relation to the starting point
Displacement
This part is used to set the wheels, gears, and servos on an axle
D-Shaft Set Collar
Mathematically, why will a 40-tooth gear on the servos and an 80-tooth gear on the wheel provide less speed than direct drive?
40:80 is a 1:2 ratio or 1/2. Direct drive is 1:1 which is 1. Direct drive has a higher ratio in this case.
A biker starts on a trail that heads north for a mile, turns right and heads east for a mile and then turns right again and heads south for a mile. It takes the biker 30 minutes. What is the distance traveled? What is the speed?
Distance: 3 miles
Speed: 3 miles divided by .5 hours = 6 mi/hr
A biker starts on a trail that heads north for a mile, turns right and heads east for a mile and then turns right again and heads south for a mile. It takes the biker 30 minutes. What is the displacement? What is the velocity?
Displacement: 1 mile
Velocity: 1 mile divided by .5 hours = 2 mi/hr east
This quantity that has a value and direction
Vector