# physics

posted by .

Two gears A and B are in contact. The radius of gear A is twice that of gear B. (a) when A’s angular velocity 6.00 Hz counter clockwise, what is B’s angular velocity? (b) If A’s radius to the tip of the teeth is 10.0 cm what is the linear speed of a point on the tip of a gear tooth? What is the linear speed of a point on the tip of B’s gear tooth?

• physics -

Think about it. The speed of the gears' boundaries must match. Since A has a larger radius, it turns more slowly in rpm.

So, if A is 6Hz ccw, B is 12Hz cw.

The linear speed must match,or the teeth will strip!

A's speed is 2π(10)*6 = 120πcm/s
B's speed is the same: 2π(5)*12

## Similar Questions

1. ### science

A gear with 30 teeth turns a gear with 5 teeth. How many turns will the driven gear turn for every turn the drive gear makes?
2. ### math

i need help on ratios, gears and teeth.ex. teeth on driving gear A-35 teeth on driving gear B-?
3. ### physics

Consider a hoola-hoop of radius R and it is spinning about its symmetry axis at a constant angular velocity. Now, I double its mass and halve its angular velocity. What is the new angular momentum in terms of the initial angular momentum?
4. ### PHYSICS ---HELP!

Consider a hoola-hoop of radius R and it is spinning about its symmetry axis at a constant angular velocity. Now, I double its mass and halve its angular velocity. What is the new angular momentum in terms of the initial angular momentum?
5. ### Intergated chemistry/physics

Draw a setup containing 3 gears. For every turn of the input gear, you need the output gear to spin 9 times. The drawing doesn't have to be perfect, but make sure to label the input gear, the output gear, and the number of teeth on …
6. ### Math

2 Gears are in their starting position. Gear 1 has 6 teeth. Gear 2 has 8 teeth. As gear 1 turns, it causes gear 2 to turn at a different rate. Gear 1 is rotated until the two gears are back at starting position. What is the minimum …
7. ### trig

A gear with a radius of 32 centimeters is turning at pi/9 radians/sec. What is the linear speed (velocity) at a point on the outer edge of the gear?
8. ### pre-calculus

two gears are connected by a belt. the large gear has a radius of 20cm while the small gear has a radius of 10cm. if a point on the small gear travels at 16 rpm (revolutions per minute), find the angular velocity of the large gear. …
9. ### math

1.A milling machine has a gear that spins, making one complete rotation counter clockwise every 360 milliseconds. The gear has a tooth with a marker in it as shown in the diagram below. There is a sensor 30mm below the center of the …
10. ### angular velocity/ physics

how to find time period in angular velocity if body is equal to twice of the radius of the gravity

More Similar Questions