A solid, uniform disk of radius 0.250 m and mass 55.0 kg rolls down a ramp of length 4.50 m that makes an angle of 15.0 with the horizontal. The disk starts from rest from the top of the ramp. Find (a) the speed of the disks center of mass when it reaches the bottom of the ramp and (b) the angular speed of the disk at the bottom of the ramp.

PHY 111 Class Notes 1/11 1/15 Quantities: ● Length: meters ○ 1 meter is defined as the distance travelled by light in vacuum during a time interval of 1/299792458 seconds. ● Mass: kg ○ 1 kg is defined as the mass of a specific platinum iridium alloy cylinder kept at the International Bureau of Weights and Measures in France. ● Time: second (s) ○ 1 second is defined as 9192631700 times the period of oscillation of radiation from the cesium atom. ○ 1 KHZ = 10^3/second Quarks = groups of subatomic particles Significant Figures: ● Accurate digit: can be confirmed ● Reasonably estimated digit: guess/rounded ● Piece of wood that appears to meas