moto circolare uniforme

• Motion of a body (CORPO) travelling at a constant speed (VELOCITA’)

in a circular path (TRAIETTORIA)

r is the radius (RAGGIO)of the path

The velocity (v) of a body in UCM is variable and is tangential (TANGENTE) to the path of motion

This is the reason why in UCM wehave an acceleration

• The Earth (TERRA) orbits the Sun (SOLE) once a year (ANNO) (3.16x107s) in a nearly circular orbit of radius 1.50x1011m. With respect to the Sun, determine:• a) the angular velocity of the Earth• b) the speed of the Earth• c) the magnitude and direction of the

Earth’s centripetal acceleration