An airplane propeller consists if three radial blades, each of length 1.4 m and a mass 4.8 kg. What is the kinetic energy of this propeller when rotating at 2700 rev/min? Assume that each blade is (approximately) a uniform rod.
answer in J
An airplane propeller consists if three radial blades, each of length 1.4 m and a mass...
An airplane propeller is 2.18 m in length (from tip to tip) with mass 121 kg and is rotating at 3000 rpm (rev/min) about an axis through its center. You can model the propeller as a slender rod. Suppose that, due to weight constraints, you had to reduce the propeller's mass to 75.0% of its original mass, but you still needed to keep the same size and kinetic energy. What would its angular speed have to be, in rpm?
HW8 Exercise . Part A Constants What is its ro An airplane propeller is 1.93 m in length (from tip to tip) with mass 94.0 kg and is rotating at 2700 rpm ( rev/min) about an axis through its center. You can model the propeller as a slender rod. K 1.16 Corre Part B Suppose that, the same size a Submit X Incorrec Provide Feedback Correct PartB Suppose that, due to weight constraints, you had to reduce the propeller's mass...
A propeller is modeled as five identical uniform rods extending radially from its axis. The length and mass of each rod are 0.753 m and 2.67 kg, respectively. When the propellor rotates at 513 rpm (revolutions per minute), what is its rotational kinetic energy? rotational kinetic energy:
A windmill has three blades that can extend or retract depending on the wind speed. Each blade can be approximated by a rod with a mass of 270 kg that is fixed at one end. The moment of inertia of each blade is 1/3 ML2, where L is the length of the blade. Each blade is 9.0 m long. Calculate the total moment of inertia of the windmill. The wind causes the windmill to rotate with a constant speed in...
A helicopter has two blades (see figure), each of which has a mass of 250 kg and can be approximated as a thin rod of length 6.7 m. The blades are rotating at an angular speed of 53 rad/s. (a) What is the total moment of inertia of the two blades about the axis of rotation? (a) Determine the rotational kinetic energy of the spinning blades.
A helicopter has two blades (see figure), each of which has a mass of 240 kg and can be approximated as a thin rod of length 6.7 m. The blades are rotating at an angular speed of 43 rad/s. (a) What is the total moment of inertia of the two blades about the axis of rotation? (a) Determine the rotational kinetic energy of the spinning blades.
A model of a helicopter rotor has four blades, each of length 3.1 m from the central shaft to the blade tip. The model is rotated in a wind tunnel at a rotational speed of 520 rev/min. Part A What is the linear speed of the blade tip? Express your answer in meters per second. Part B What is the radial acceleration of the blade tip expressed as a multiple of the acceleration of gravity, g? Express your answer as...
A propeller is modeled as five identical uniform rods extending radially from its axis. The length and mass of each rod are 0.777 m and 2.67 kg, respectively. When the propellor rotates at 573 rpm (revolutions per minute), what is its rotational kinetic energy?
A propeller is modeled as five identical uniform rods extending radially from its axis. The length and mass of each rod are 0.771 m and 2.55 kg, respectively. When the propellor rotates at 501 rpm (revolutions per minute), what is its rotational kinetic energy K?
A propeller is modeled as five identical uniform rods extending radially from its axis. The length and mass of each rod are 0 895 m and 2,67 kg, respecively. When the propellor rotates at 579 pm (révolutions per minute), what is its rotational kinetic energy? Number