Question

A wind turbine is initially spinning at a constant angular speed. As the wind's strength gradually...

A wind turbine is initially spinning at a constant angular speed. As the wind's strength gradually increases, the turbine experiences a constant angular acceleration 0.159 rad/s2. After making 2870 revolutions, its angular speed is 132 rad/s. (a) What is the initial angular velocity of the turbine? (b) How much time elapses while the turbine is speeding up?

2. A dentist causes the bit of a high-speed drill to accelerate from an angular speed of 1.11 x 104 rad/s to an angular speed of 4.49 x 104 rad/s. In the process, the bit turns through 2.83 x 104 rad. Assuming a constant angular acceleration, how long would it take the bit to reach its maximum speed of 9.29 x 104 rad/s, starting from rest?

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A wind turbine is initially spinning at a constant angular speed. As the wind's strength gradually...
A wind turbine is initially spinning at a constant angular speed. As the wind's strength gradually increases, the turbine experiences a constant angular acceleration 0.113 rad/s2. After making 2870 revolutions, its angular speed is 139 rad/s. (a) What is the initial angular velocity of the turbine? (b) How much time elapses while the turbine is speeding up?
A wind turbine is initially spinning at a constant angular speed. As the wind's strength gradually...
A wind turbine is initially spinning at a constant angular speed. As the wind's strength gradually increases, the turbine experiences a constant angular acceleration 0.150 rad/s2. After making 2870 revolutions, its angular speed is 127 rad/s. (a) What is the initial angular velocity of the turbine? (b) How much time elapses while the turbine is speeding up? (a) Number___ Unit___ (b) Number___ Unit___
A dentist causes the bit of a high-speed drill to accelerate from an angular speed of...
A dentist causes the bit of a high-speed drill to accelerate from an angular speed of 1.67 x 104 rad/s to an angular speed of 4.55 x 104 rad/s. In the process, the bit turns through 3.10 x 104 rad. Assuming a constant angular acceleration, how long would it take the bit to reach its maximum speed of 9.71 x 104 rad/s, starting from rest?
A dentist causes the bit of a high-speed drill to accelerate from an angular speed of...
A dentist causes the bit of a high-speed drill to accelerate from an angular speed of 1.09 x 104 rad/s to an angular speed of 5.01 x 104 rad/s. In the process, the bit turns through 3.23 x 104 rad. Assuming a constant angular acceleration, how long would it take the bit to reach its maximum speed of 9.42 x 104 rad/s, starting from rest?
1)A dentist causes the bit of a high-speed drill to accelerate from an angular speed of...
1)A dentist causes the bit of a high-speed drill to accelerate from an angular speed of 1.30 × 104 rad/s to an angular speed of 3.14 × 104 rad/s. In the process, the bit turns through 1.94 × 104 rad. Assuming a constant angular acceleration, how long would it take the bit to reach its maximum speed of 7.85 × 104 rad/s, starting from rest? 2)It takes a force of 80.0 N to compress the spring of a toy popgun...
A dentist causes the bit of a high-speed drill to accelerate from an angular speed of...
A dentist causes the bit of a high-speed drill to accelerate from an angular speed of 1.31 x 10^4 rad/s to an angular speed of 3.22 x 10^4 rad/s. In the process, the bit turns through 1.59 x 10^4 rad. Assuming a constant angular acceleration, how long would it take the bit to reach its maximum speed of 9.31 x 10^4 rad/s, starting from rest?
A grinding wheel of radius 20.0 cm is initially spinning with an angular speed of 2.0...
A grinding wheel of radius 20.0 cm is initially spinning with an angular speed of 2.0 rad/s. When the power of the grinder is increased the angular speed increased to 10 rad/s over the next 5.0 s. a. Calculate the avg. angular speed of the grindstone during the 5 seconds. b. Calculate the angular acceleration of the grinding wheel during the 5 seconds. c. How many revolutions does the grindstone turn during the 5 seconds?
A centrifuge takes 100 s to spin up with constant angular acceleration (α) from rest to...
A centrifuge takes 100 s to spin up with constant angular acceleration (α) from rest to its final angular speed of 1,875 (rad/s). What is the angular acceleration (in rad/s2) of the centrifuge as it spins up? (Hint: use relationship between angular velocity and angular acceleration)             (ii)       How many revolutions does the centrifuge make as it goes from rest to its final                         angular speed? (Hint: use relationship between angular displacement and                         angular acceleration, and noting that one revolution = 2 rads)...
A wheel rotates with a constant angular acceleration of 3.00 rad/s2. If the angular speed of...
A wheel rotates with a constant angular acceleration of 3.00 rad/s2. If the angular speed of the wheel is 2.50 rad/s at t = 0, how many revolutions has the wheel gone through after 2.90 s?
7) A disk is initially spinning about its center at 17 rad/s counter-clockwise and a constant...
7) A disk is initially spinning about its center at 17 rad/s counter-clockwise and a constant angular acceleration of 2.9 rad/s2 is applied to it clockwise. How many revolutions does it make before it stops?
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT