q no. 2 angular velocity = V/R = 5/1 = 5m\s
both centripetal and centrifugal force dont act in a same fram of reference only depends on ur frame of reference
considering an interial fram of reference the force will be centripetal
so centripeatl force MV^2/R = 25N
q. no 3 orbital velocity of a satilite = root over GM/R u will get this by equating centripetal force and gravtional force by earth
where M is mass of earth and r radius of earth G gratitatinal constant
sole further
well wats m.a. and v.r. in the first ques