In physics, circular motion is a movement of an object along the circumference of a circle or rotation along a circular path. It can be uniform, with constant angular rate of rotation and constant speed, or non-uniform with a changing rate of rotation. The rotation around a fixed axis of a three-dimensional body involves circular motion of its parts. The equations of motion describe the movement of the center of mass of a body.
on futuristic putters: Although there is a standard length for conventional putters (men's are 35 inches - 90cm, and women's are 33-34 inches - 84-86cm), don't be afraid of altering the length of your putter if you feel uncomfortable with it. Some putters are light and others are heavier.
A child of 9+ years old, or even a large-sized younger child, may find the grip too small and need an adult racket. If the grip is correct for the child, you should be able to slide a finger up the middle of his finger tips. Racquet sizes range from 21 inches for a 3 or 4 years old to 26 inches for a 10 year old.Once a child hits about 5 feet tall they should move on to the 27 inch adult racket. Make sure the racket isnât too heavy, or else your child wonât want to hold it or swing it around for long. A light weight racket is best.f the grip is correct for the child, you should be able to slide a finger up the middle of his finger tips. Racquet sizes range from 21 inches for a 3 or 4 years old to 26 inches for a 10 year old. Once a child hits about 5 feet tall they should move on to the 27 inch adult racket.