The turntable of an old record player has two readings: 33 rpm and 45 rpm. Suppose that the rotational acceleration is constant in each of the following cases. You switch the turntable from 33 rpm to 45 rpm, and it takes about 3.5 s for the speed to change. Determine the magnitude of the rotational acceleration of the turntable. Express your answer with the appropriate units.   You switch the turntable from 33 rpm to 45 rpm, and it takes about 3.5 s for the speed to change. Determine the magnitude of the average tangential acceleration of a point on the turntable that is 7.0 cm from the axis of rotation. Express your answer with the appropriate unit

A potter's wheel, with rotational inertia 12 kg-m², is spinning freely at 40 rpm. The potter drops a lump of clay onto the wheel, where it sticks a distance 1.2 m from the rotational axis. If the subsequent angular speed of the wheel and clay is 32 rpm what is the mass of the clay? 1.4 kg 2.3 kg 1.8 kg O 2.1 kg

The angular speed of a rotating platform changes from ω0 = 3.6 rad/s to ω = 6.4 rad/s at a constant rate as the platform moves through an angle Δθ = 5.5 radians. The platform has a radius of R = 12 cm. Calculate the angular acceleration of the platform α in rad/s2.

A turntable 46.0 cm in diameter diameter starts from rest, and rotates at 68.0 rpm at its first complete revoļution with constant angular acceleration. If it maintains the same acceleration, a) what is the rotational speed at time 34.0 seconds? b) what is the tangential speed of a point 10 cm from the edge of the turntable at time 34.0 seconds? Enter answer "O" in the answer box. Submit in the corresponding folder (or email) your solution by 3:50 pm, include a sketch/drawing of the rotating wheel, and a step- by-step solution.

Answer the question in full details, thank you very much: The tub of a washer goes into its spin cycle, starting from rest and gaining angular speed steadily for 8.21 s,when it is turning at 4.99 revolutions/s. At this point the person doing the laundry opens the lid, and a safetyswitch turns off the washer. The tub smoothly slows to restin 11.6 s. Through how many revolutions does the tub turn while it is in motion?

A turntable is rotating at 78 revolutions per minute and has a rotational inertia of I= 0.045 kg.m^2. A 500g ball of clay is dropped vertically onto the turntable so it sticks at 8.0cm from the center of the turntable. How fast is the turntable rotating (in rpm) after this event

A string trimmer is a tool for cutting grass and weeds; it utilizes a length of nylon "string" that rotates about an axis perpendicular to one end of the string. The string rotates at an angular speed of 37 rev/s, and its tip has a tangential speed of 56 m/s. What is the length of the rotating string

A disc is rolling on the ground and moving at 30 m/s as a result of its rolling. The disc stops in 20 s after an external force acts on it. How many turns will it make before it stops? Also find the amount of torque that was applied on the disc that stopped it from rolling. The mass of the disc is 50 kg. R = 40 cm V = 30 m/s

A professor sits on a rotating stool that is spinning at 10.010.0 rpm while she holds a heavy weight in each of her hands. Her outstretched hands are 0.7750.775 m from the axis of rotation, which passes through her head into the center of the stool. When she symmetrically pulls the weights in closer to her body, her angular speed increases to 24.524.5 rpm. Neglecting the mass of the professor, how far are the weights from the rotational axis after she pulls her arms in?

The tub of a washer goes into its spin-dry cycle, starting from rest and reaching an angular speed of 3.0 rev/s in 11.0 s. At this point, the person doing the laundry opens the lid, and a safety switch turns off the washer. The tub slows to rest in 10.0 s. Through how many revolutions does the tub turn during this 21 s interval? Assume constant angular acceleration while it is starting and stopping. Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation. Carry out all intermediate results to at least four-digit accuracy to minimize roundoff error. rev Need Help? Read It