Question

5. Design a right angled bell crank lever. The horizontal arm is 500 mm long and a load of 4.5 kN acts
vertically downward through a pin in the forked end of this arm. At the end of the 150 mm long am which is
perpendicular to the 500 mm long arm, a force Pact at night angles to the axis of 150 mm ann through a pin
into a forked end. The lever consists of forged steel material and a pin at the fulcrum. Take the following data
for both the pins and lever material: Safe stress in tension=75 MPa, Safe stress in shear =60 MPa, Safe bearing
pfessure on pins =10 N/mm.​

Answer 1

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Answer 2

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Step-by-step explanation:

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