00:01
Hello students, let's solve the a part of the question.
00:03
We have to find out angular velocity after 4 .5 seconds.
00:07
And as we know, a t is equal to omega.
00:09
Here, omega is angular velocity, a is the angular acceleration.
00:13
From here, we will get omega is equal to 4 .5 which is t, multiplied by 2 .8, which is a.
00:21
And this is equal to 12 .6 radian per second.
00:25
This is the answer for a part.
00:27
Now, in b part, through what angle does the 2.
00:29
Wheel turn and we know a is equal to a is equal to half a t square here a is the angle and this is equal to half multiplied by a is 2 .8 multiplied by 4 .5 square and this value will be equal to 28 .35 radiance this is the answer for b part now let's solve the c part in c part we have to find out how many revolution has it made in c part we know revolution is equals to 8 divided by 2 multiplied by pi and this value will be equal to half multiplied by 28 .35 multiplied by 3 .14 therefore devolutions will be equal to 44 .53 revolutions.
01:16
This is the answer for c part...