A wheel 2.00 m in diameter lies in a vertical plane and rotates with a constant angular acceleration of 3.60 rad/s2. The wheel starts at rest at t = 0, and the radius vector of a certain point P on the rim makes an angle of 57.3° with the horizontal at this time. At t = 2.00 s find the following.
(a) the angular speed of the wheel
rad/s
(b) the tangential speed and the total acceleration of the point P
m/s2
(c) the angular position of the point Prad

from 1609, galileo galilei used the recently invented telescope to observe the sun, moon and planets. he saw the mountains and craters of the moon, and for the first time revealed the planets to be worlds in their own right. galileo also provided strong observational evidence that planets orbited the sun.

his discoveries about the moon, jupiter's moons, venus, and sunspots supported the idea that the sun - not the earth - was the center of the universe, as was commonly believed at the time.galileo turned his gaze toward venus, the brightest celestial object in the sky - other than the sun and the moon.

f=ma newton's second law 7x8=56n

force tends to be low and long diustance masses are high