A child of mass 25.0 kg sits on the end of a seesaw, 1.50 m from the fulcrum. The child's friend (mass = 15.0 kg) sits halfway between the child and the fulcrum. On the other end of the seesaw, the child's father (mass = 85.0 kg) sits 2.00 m from the fulcrum. The seesaw itself has a mass of 15.0 kg. Find the center of mass of the system consisting of the three people and the seesaw, relative to the location of the fulcrum.
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.
A child of mass 25.0 kg sits on the end of a seesaw, 1.50 m from the fulcrum. The
child's friend (mass = 15.0 kg) sits halfway between the child and the fulcrum. On the
other end of the seesaw, the child's father (mass = 85.0 kg) sits 2.00 m from the
fulcrum. The seesaw itself has a mass of 15.0 kg. Find the center of mass of the
system consisting of the three people and the seesaw, relative to the location of the
fulcrum.
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