Question 1 1 of 7 The engine of a model airplane must both spin a propeller and push air backward to propel the airplane forward. Model the propeller as three 0.25-m-long thin rod mass 0.045 kg each, with the rotation axis at one end. Part A What is the moment of inertia of the propeller? Express your answer to two significant figures and include appropriate units. HA Value Units Submit Request Answer Part B How much energy is required to rotate the propeller at 5400 rpm? Ignore the energy required to push the air. Express your answer to two significant figures and include appropriate units. HẢ ? т

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Angular speed, acceleration and displacement

Angular acceleration is defined as the rate of change in angular velocity with respect to time. It has both magnitude and direction. So, it is a vector quantity.

Angular Position

Before diving into angular position, one should understand the basics of position and its importance along with usage in day-to-day life. When one talks of position, it’s always relative with respect to some other object. For example, position of earth with respect to sun, position of school with respect to house, etc. Angular position is the rotational analogue of linear position.