Vikas TU
Last Activity: 7 Years ago
Dear Student,
After making suitable FBDs,
These are the FBD of the plank and the ball.
Equation from fbd of plank
N1=mg-Fsinq
Fcosq-f1=ma1
Equations from the fbd of ball
f1-f2=Ma2 -------1
f1R+f2R=MR
2α/2
=>f1+f2=MRα/2 --------2
N2=N1+mg
a2+Rα=a1
Solving 1 and 2
4f1=Ma1+Ma2
a1+a2=4f1/M
a1-a2=Rα
Solving these 2 above equations give
a1= 2f1/M + Rα/2
Cheers!!
Regards,
Vikas (B. Tech. 4th year
Thapar University)