Question

A disc has a speed of 1200 rpm and it is made to slow down at...

A disc has a speed of 1200 rpm and it is made to slow down at a uniform rate of 4 rad/s2.Calculate the number of revolution it makes before coming to rest?

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A compact disc rotates from rest up to an angular speed of 31.6 rad/s in a...
A compact disc rotates from rest up to an angular speed of 31.6 rad/s in a time of 0.913 s. (a) What is the angular acceleration of the disc, assuming the angular acceleration is uniform? ______________ rad/s2 (b) Through what angle does the disc turn while coming up to speed? rad (c) If the radius of the disc is 4.45 cm, find the tangential speed of a microbe riding on the rim of the disc. ____________ m/s (d) What is...
Disc jockeys (DJs) use a turntable in applying their trade, often using their hand to speed...
Disc jockeys (DJs) use a turntable in applying their trade, often using their hand to speed up or slow down a disc record so as to produce a desired change in the sound. Suppose DJ Trick wants to slow down a record initially rotating clockwise (as viewed from above) with an angular speed of 32.1 rpm to an angular speed of 23.3 rpm. The record has a rotational inertia of 0.012 kg · m2 and a radius of 0.15 m....
1.An automobile engine slows down from 3500 rpm to 1200 rpm in 2.1 s .Calculate the...
1.An automobile engine slows down from 3500 rpm to 1200 rpm in 2.1 s .Calculate the total number of revolutions the engine makes in this time. Express your answer as an integer. 2.Determine the moment of inertia of a 9.50 kg sphere of radius 0.387 m when the axis of rotation is through its center.
The engine of a car is initially rotating at 5,600 rpm and after 4.0 seconds it...
The engine of a car is initially rotating at 5,600 rpm and after 4.0 seconds it has reduced its revs to 2,500 rpm. 1. the car reduces the engine revolutions, therefore its angular acceleration and can give us a value of __________. 2. the angular speed of 5600 rpm is equivalent to _________ rad / s 3. the angular speed of 2500 rpm is equivalent to _________ rad / s 4. the angular acceleration is _________ rad / s2^ 5....
A record player, or phonograph, is a device used to spin a vinyl disc upon which...
A record player, or phonograph, is a device used to spin a vinyl disc upon which sound waveforms are imprinted, and in this way, play music. Starting from rest, a particular record player achieves the constant angular speed at which music is played in 4.50 s with a constant angular acceleration of0.7757 rad/s2. The album Led Zeppelin IV is 42 minutes and 34 seconds in duration. After the entire album is played, the record player requires 8.00 s to come...
You have a horizontal grindstone (a disk) that is 86 kg, has a 0.38 m radius,...
You have a horizontal grindstone (a disk) that is 86 kg, has a 0.38 m radius, is turning at 88 rpm (in the positive direction), and you press a steel axe against the edge with a force of 18 N in the radial direction. Assuming that the kinetic coefficient of friction between steel and stone is 0.20, calculate the angular acceleration of the grindstone in rad/s2. What is the number of turns, N, that the stone will make before coming...
You have a grindstone (a disk) that is 91.0 kg, has a 0.370-m radius, and is...
You have a grindstone (a disk) that is 91.0 kg, has a 0.370-m radius, and is turning at 68.0 rpm, and you press a steel axe against it with a radial force of 11.0 N. (a) Assuming the kinetic coefficient of friction between steel and stone is 0.50, calculate the angular acceleration (in rad/s2) of the grindstone. (Indicate the direction with the sign of your answer.) _____rad/s2 (b) How many turns (in rev) will the stone make before coming to...
1. A dentist using a dental drill brings it from rest to maximum operating speed of...
1. A dentist using a dental drill brings it from rest to maximum operating speed of 364,000 rpm in 3.2 s. Assume that the drill accelerates at a constant rate during this time. (a) What is the angular acceleration of the drill in rev/s2? rev/s2 (b) Find the number of revolutions the drill bit makes during the 3.2 s time interval. rev 2. In a laundromat, during the spin-dry cycle of a washer, the rotating tub goes from rest to...
1) A centrifuge in a medical laboratory rotates at an angular speed of 3,650 rev/min. When...
1) A centrifuge in a medical laboratory rotates at an angular speed of 3,650 rev/min. When switched off, it rotates through 54.0 revolutions before coming to rest. Find the constant angular acceleration  (in rad/s2) of the centrifuge. 1      rad/s2 2) The diameters of the main rotor and tail rotor of a single-engine helicopter are 7.59 m and 0.98 m, respectively. The respective rotational speeds are 451 rev/min and 4,132 rev/min. Calculate the speeds of the tips of both rotors. main rotor    ...
---- A centrifuge is a common laboratory instrument that separates components of differing densities in solution....
---- A centrifuge is a common laboratory instrument that separates components of differing densities in solution. This is accomplished by spinning a sample around in a circle with a large angular speed. Suppose that after a centrifuge in a medical laboratory is turned off, it continues to rotate with a constant angular deceleration for 10.7 s before coming to rest. A) If its initial angular speed was 3830 rpm , what is the magnitude of its angular deceleration? B) How...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT