Ahollow, thin-walled sphere of mass 14.0 kg and diameter 48.0 cm is rotating about an axle through its center. the angle (in radians) through which it turns as a function of time (in seconds) is given by θ(t)=at2+bt4, where a has numerical value 1.10 and b has numerical value 1.60.what are the units of the constant a? what are the units of the constant ?

Answer

given,                          

θ(t) = A t²+B t⁴  

angle that is θ is in radians                  

mass of the sphere = 14 Kg              

diameter = 48 cm

A = 1.10                            

B = 1.60                                

unit of constant A and B = ?

Unit of A =

              =  

Unit of A= rad/s²

Unit of B =  

              =  

Unit of B= rad/s⁴

b) phosphorus pentoxide