A shaft carrying two pulleys 1 and 2, and supported on two bearings A and B. The shaft transmits a power of 7.5 kWat 360 rpm from the pulley 1 to the pulley 2. The diameters of pulleys 1 and 2 are 250 mm and 500 mm respectively. The masses of pulleys 1 and 2 are 10 kg and 30 kg respectively. The belt tensions act vertically downward and the ratio of belt tensions on the tight side to slack side for each pulley is 2.5:1. The shaft is made of plain carbon steel, the Permissible shear stress is 63.333 MPa and the factor of safety is 3. 1- Find the total force acting at the centre line of the pulley 1 and 2 and 2- Find suitable diameter of shaft, Assume G = 79300 MPa. 250 500 250 2.3 log LLO T= Px 60 2AN T= (1₁-1₂) R T₁ = √M² + T² = ²xtxd² 16 T. Ts of contact of 225°. The band has a diameter. 1-35 500

A shaft carrying two pulleys 1 and 2, and supported on two bearings A and B. The shaft transmits a power of 7.5 kWat 360 rpm from the pulley 1 to the pulley 2. The diameters of pulleys 1 and 2 are 250 mm and 500 mm respectively. The masses of pulleys 1 and 2 are 10 kg and 30 kg respectively. The belt tensions act vertically downward and the ratio of belt tensions on the tight side to slack side for each pulley is 2.5:1. The shaft is made of plain carbon steel, the Permissible shear stress is 63.333 MPa and the factor of safety is 3. 1- Find the total force acting at the centre line of the pulley 1 and 2 and 2- Find suitable diameter of shaft, Assume G = 79300 MPa. 250 500 250 2.3 log LLO T= Px 60 2AN T= (1₁-1₂) R T₁ = √M² + T² = ²xtxd² 16 T. Ts of contact of 225°. The band has a diameter. 1-35 500

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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