Question

Two smooth cylinders, each of weight W=1000N and radius 15cm, are connected at their centres by a string AB of length 40 cm; and rest up on a horizontal plane, supporting above them a third cylinder of weight 2000N and radius 15cm as shown in the figure on the floor at the points of contact D and E. * ​

Answer 1

Explanation:

Given Two smooth cylinders, each of weight W=1000 N and radius 15 cm, are connected at their centres by a string AB of length 40 cm; and rest up on a horizontal plane, supporting above them a third cylinder of weight 2000 N and radius 15 cm as shown in the figure. Find the force S in the string AB and the pressure produced on the floor at the points of contact D and E.

• Given So there are two smooth cylinders  
• So weight of two cylinders are 1000 N
• Also Radius of each cylinder = 15 cm
• Length of string AB = 40 cm
• So from triangle inside the 3 circles will be PQR
• So in triangle PQR we have M and N are midpoints of PQ and QR and O is the midpoint of base PR
•        PQ = PM + MQ
•             = 15 + 15
•              = 30 cm
•  So from triangle PQO we have
•       Sin theta = PO / PQ
•                     = 20 / 30
•                     = 2/3
•                     = 0.666
•    So theta = sin^-1 0.667
•                 = 41.75 degree

Reference link will be

https://brainly.in/question/1700684