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Q4) The tension in a flat belt pulley system is 90 N when stationary. The 200 mm diameter drive wheel rotates at a constant speed of 1800 rpm whilst in operation with coefficient of friction between contact surfaces of 0.34. The power output is 1.75 kW.

Using the relationship:

F₁/F₂ = e^μθ

Where,

F₁ = force in the tight side

F₂ = force in the slack side

m =the coefficient of friction

q = the angle of lap in radians

Calculate the angle of lap in degrees. (16)