An energetic parent places his 20 kg child on a 5.0 kg cart to which a 2.0-m-long rope is attached. He then holds the end of the rope and spins the cart and child around the circle, keeping the rope parallel to the ground. If the tension in the rope is 100 N, how many revolutions per minute does the cart make? Note: rolling friction between the cart's wheels and the ground is negligible.
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.
An energetic parent places his 20 kg child on a 5.0 kg cart to which a 2.0-m-long rope is attached. He then holds the end of the rope and spins the cart and child around the circle, keeping the rope parallel to the ground. If the tension in the rope is 100 N, how many revolutions per minute does the cart make? Note: rolling friction between the cart's wheels and the ground is negligible.
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