In Fig. 3, an annular copper cylinder of radii Router = 40 cm, Rinner = 20 cm and mass M = 5 kg rolls from rest a D = 10 m distance down a Ф = 30° incline. Assume that the incline and the horizontal surface have the same fictional coefficient. a/ Compute the speed of the center of mass of the cylinder at the end of
the incline.
b/ How long does the cylinder reach to the bottom of the incline?
c/ If the annular copper cylinder and a solid wood cylinder having the same radius Router and mass release

together from rest at the initial location, which cylinder reaches the bottom first? Why?

the current is 0.6

voltage ÷ resistance = current

so 12 ÷ 20 = 0.6

reserve is the answer

the minimum constant speed at which she can catch the train is 2.7 m/s

given:

acceleration = 0.6

time = 4.5 s

to find:

velocity = ?

formula used:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

solution:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

v = 0 + (0.6 × 4.5)

v = 2.7 m/s

the minimum constant speed at which she can catch the train is 2.7 m/s