00:02
Solution of this question is part a, part a here we need to calculate final angular velocity.
00:22
So here we are going to use relation.
00:25
Omega f is equal to omega -i plus alpha -t.
00:39
Substituting given values in this equation, omega -f is equal to 0 .250 -250.
00:52
Plus alpha is 0 .891 multiply by 0 .194.
01:10
So on solving this, omega f is equal to 0 .423 revolution per second.
01:20
This is the answer of part a.
01:22
Now part b is here we need to calculate.
01:31
Angular displacement so here we are going to use relation theta is equal to omega now imma i t plus 1 divided by 2 alpha t squared so now substituting values in this equation omega i is 0 .250 rate revolution per second multiply 0 .194 second plus 1 divide by 2 0 .8 multiply 0 .194 square.
02:08
So now on solving this, theta is equal to 0 .0652 radian.
02:26
This is the answer of part b...