A potter is shaping a bowl on a potter's wheel rotating at constant angular velocity of 1.8 rev/s. The friction force between her hands and the clay is 1.6 N total. Part A How large is her torque on the wheel, if the diameter of the bowl is 9.0 cm? Express your answer to two significant figures and include the appropriate units.   Part B How long would it take for the potter's wheel to stop if the only torque acting on it is due to the potter's hands? The moment of inertia of the wheel and the bowl is 0.11kg⋅m2. Express your answer to two significant figures and include the appropriate units.

Three forces are applied to a wheel of radius 0.350 m, as shown in the figure (Figure 1). One force is perpendicular to the rim, one is tangent to it, and the other one makes a 40.0° angle with the radius. Assume that F₁ = 12.4 N, F2 = 14.6 N, and F3 = 8.20 N. Part A What is the magnitude of the net torque on the wheel due to these three forces for an axis perpendicular to the wheel and passing through its center? ΑΣΦ T= 1.83 Submit Previous Answers Request Answer × Incorrect; Try Again Part B What is the direction of the net torque in part A. into the page out of the page. Submit Previous Answers Correct ? N.m

A 40 kg. 5.5-m-long beam is supported, but not attached to, the two posts in the figure (Figure 1). A 20 kg boy starts walking along the beam. Part A You may want to review (Page 204) For help with math skills, you may want to review: How close can he get to the right end of the beam without it falling over? Express your answer to two significant figures and include the appropriate units. The Vector Cross Product View Available Hint(s) d = Value Units Submit 3.0 m

A hollow spherical shell with mass 2.00 kg rolls without slipping down at 38° slope. a. Find the acceleration, the friction force, and the minimum coefficient needed to prevent slipping. b. How would your answers to part a) change if the mass were doubled to 4.00 kg?

A 0.74-m-diameter solid sphere can be rotated about an axis through its center by a torque of 12.8 m * N which accelerates it uniformly from rest through a total of 160 revolutions in 16.0 s. Part A What is the mass of the sphere? Express your answer to two significant figures and include the appropriate units. M = O μA Submit Value Units Request Answer ?

A child exerts a tangential 55.1 N force on the rim of a disk-shaped merry-go-round with a radius of 2.39 m. Part A If the merry-go-round starts at rest and acquires an angular speed of 0.4250 rev/s in 5.00 s, what is its mass?

in rpm

The 2.4 kg , 4.6-cm diameter disk is rotating as shown.

A wind turbine has 12,000 kg blades that are 37 m long. The blades spin at 22 rpm. Part A If we model a blade as a point mass at the midpoint of the blade, what is the inward force necessary to provide each blade's centripetal acceleration? Express your answer with the appropriate units. F= Valye HÅ Submit Request Answer Provide Feedback G → Units ? N

Dario, a prep cook at an Italian restaurant, spins a salad spinner and observes that it rotates with constant speed 20.0 times in 5.00 seconds and then stops spinning it. The salad spinner rotates 6.00 more times before it comes to rest. Assume that the spinner slows down with constant angular acceleration. Part A What is the magnitude of the angular acceleration of the salad spinner as it slows down? Express your answer numerically in radians per second per second. ▸ View Available Hint(s) a = 8.38 radians/s² Submit ✓ Correct Part B Previous Answers How long does it take for the salad spinner to come to rest? Express your answer numerically in seconds. ▸ View Available Hint(s) t = Templates Symbols undo redo reset keyboard shortcuts help, S