The diameters of the main rotor and tail rotor of a single-engine helicopter are 7.70 m and 0.98 m, respectively. The respective rotational speeds are 457 rev/min and 4,149 rev/min. Calculate the speeds of the tips of both rotors. main rotor      m/s tail rotor      m/s

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

A rock tied to the end of string swings at a constant angular rate. If you are told that the string can support a total of 85 N of force before breaking, what is the maximum angular velocity the rock can rotate if the rock has a mass of 0.16 kg, and the length of the string is 0.5 m? Give your answer in units of radian per second

Each of the following vectors is given in terms of its xx- and yy-components.

The diameters of the main rotor and tail rotor of a single-engine helicopter are 7.57 m and 1.03 m, respectively. The respective rotational speeds are 451 rev/min and 4,150 rev/min. Calculate the speeds of the tips of both rotors. main rotor =     m/s tail rotor    =  m/s Compare these speeds with the speed of sound, 343 m/s. vmain rotor  =   vsound vtail rotor  =   vsound

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 Ferris wheel rotates at an angular velocity of 0.24 rad/s. Starting from rest, it reaches its operating speed with an average angular acceleration of 0.024 rad/s2. How long does it take the wheel to come up to operating speed? Number i Units

The diameters of the main rotor and tail rotor of a single-engine helicopter are 7.53 m and 1.04 m, respectively. The respective rotational speeds are 456 rev/min and 4,140 rev/min. Calculate the speeds of the tips of both rotors MAIN ROTOR M/S? TAIL ROTOR M/S   Compare these speeds with the speed of sound, 343 m/sv main rotor = ? V SOUND    tail rotor = V SOUND

A wheel is spinning at 50 rpm with its axis vertical. After 15 s, it's spinning at 67 rpm with its axis horizontal. ▼ Part A Find the magnitude of its average angular acceleration. Express your answer in radians per second squared. α= Submit Part B for Part A for Part A undo for Part A redo for Part A reset for Part A keyboard shortcuts for Part A help for Part A 0 = Find the angle the average angular acceleration vector makes with the horizontal. Express your answer in degrees. Request Answer for Part B for Part B undo for Part B redo for Part B reset for Part B keyboard shortcuts for Part B help for Part B Submit Request Answer rad/s²

A drill bit is able to reach 2000 rpm in 0.50 s. Assuming a constant angular acceleration, how many revolutions does this bit make as it ramps up to 2000 rpm? (A) Pictorial Representation (B) Physical Representation (C) Math Representation and Solution