Answer:
The magnitude of the tangential velocity is 
The magnitude of the resultant acceleration at that point is  
Explanation:
From the question we are told that 
       The mass of the uniform disk is 
        The radius of the uniform disk is 
        The force applied on the disk is 
Generally the angular speed i mathematically represented as 
              
Where  is the angular displacement given from the question as
 is the angular displacement given from the question as 
            
                  
     is the angular acceleration which is mathematically represented as
 is the angular acceleration which is mathematically represented as 
                     
     The moment of inertial is mathematically represented as 
                      
Substituting values
                     
                         
Considering the equation for angular acceleration 
                
Substituting values
                

                    
Considering the equation for angular velocity 
     
 Substituting values
      
          
The tangential velocity of a given point on the rim is mathematically represented as 
                  
Substituting values 
                     
                      
The radial acceleration at hat point  is mathematically represented as 
              
 
                   
                  
The tangential acceleration at that point is mathematically represented as 
                
Substituting values 
            
                  
The magnitude of resultant acceleration at that point is 
                  
 Substituting values 
                 
                    