Starting from rest, a 12-cm-diameter compact disk takes 3.5 s to reach its operating angular velocity of 2000 rpm. Assume that the angular acceleration is constant. The disk's moment of inertia is 2.5 x 10-5 kg m². Part A How much torque is applied to the disk? Express your answer to two significant figures and include the appropriate units.

A high-speed drill reaches 2500 rpm in 0.50 s. Part A What is the drill's angular acceleration? Express your answer in radians per second squared. 7VE ΑΣΦ α= Submit rad/s² You have already submitted this answer. Enter a new answer. No credit lost. Try again. Part B 0 = Previous Answers Request Answer ? Through how many revolutions does it turn during this first 0.50 s? Express your answer in revolutions. Π ΑΣΦ ? rev

An automobile with 0.210 m radius tires travels 85,000 km before wearing them out. How many revolutions do the tires make, neglecting any backing up and any change in radius due to wear?  revolutions

T3.15 Please help me answer this physics question.

The tolerance is -+1 in the 3rd significant digit

The angular position of a rotating object as a function of time is given below:

A Ferris wheel rotating at 25 rad/s slows down with a constant rate of magnitude 3.7 rad/s2. How many revolutions does it make before coming to a stop? Express your answer to 1 decimal place.

Please answer it within 30 minutes. I will upvote! Problem: A car initially traveling at 29.2 m/s undergoes a constant negative acceleration of magnitude 1.40 m/s2 after its brakes are applied.   (a) How many revolutions does each tire make before the car comes to a stop, assuming the car does not skid and the tires have radii of  0.305 m. NOTE:  Answer of  (a) must differs from the correct answer by more than10%. (b) What is the angular speed of the wheels when the car has traveled half the total distance? NOTE:  Answer of  (b) must differs from the correct answer by more than10%.

A child with mass 42 kg sits on the edge of a merry-go-round at a distance of 3.0 m from its axis of rotation. The merry-go-round accelerates from rest up to 0.40 rev/s in 10 s. a. What is the angular acceleration of the merry-go-round? Express this in radians/second. b. What is the angular velocity at 5 s? c. Calculate the centripetal acceleration and tangential acceleration at 5 s. d. What is the total acceleration at 5 s? e. If the coefficient of static friction between the child and the surface of the merry-go-round is 0.6, does the child fall off before 5 s? Hint: To determine this, calculate the frictional force and force due to the acceleration of the merry-go-round on the child. Compare the two forces to find which is larger than the other, therefore overcomes the other.

1 A high speed drill reaches 2000 rpm in 0.5 s. What is the drill's angular acceleration? How many revolutions does it turn during the first 0.5s?