Question

plz solve Q no 47 with explain fast

Answer 1

Correct Answer:

 When the wheel rolls on the ground without slipping and completes half rotation, point P takes new position as P' as shown in figure.

Horizontal displacement, x=πR                                

 Vertical displacement, y  = 2R              

 Thus, displacement of the point P when wheel completes half rotation,              

 s=x2+y2−−−−−−√                 =(πR)2+(2R)2−−−−−−−−−−−−√                 =π2R2+4R2−−−−−−−−−−√                        

 but R = 1 m                      

  (given)                 ∴s=π2(1)2+4(1)2−−−−−−−−−−−√                

=π2+4−−−−−√m