Calculate angular velocity and angular acceleration of a rotating mass

[shandarama]

I need to calculate the angular velocity of a 2kg mass rotating in a horizontal circle of 2m radius where 1 revolution takes 4 seconds



ω=v/r



My attempt was this : 4/360=.0111111×57.3=.636rs.

 

[tiny-tim]

welcome to pf!

hi hshandarama! welcome to pf!

I need to calculate the angular velocity of a 2kg mass rotating in a horizontal circle of 2m radius where 1 revolution takes 4 seconds

ω=v/r

but you don't know the speed, v (it certainly isn't 4)

hint: angular velocity is radians per second ​

 

[shandarama]

Yeah I'm on it. 1.57 radians per second. Thanks