5 in M 20 in 30° Q3.) The weight of the disk and the bar are 50 lb and 20 lb respectively. The static and kinetic friction coefficients between the disk and the surface is µ = 0.6 and k = 0.45 respectively. Find: a) the largest counter-clockwise moment M that can be applied on the disk without rotation, b) the counter-clockwise moment M required to make the disk rotate at constant speed.

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British Gravitational Bg System Of Units

Measuring is the comparison of a particular physical quantity with its reference value. A unit is a fixed physical quantity. The length is a physical quantity. A physical quantity is the product of a unit and the numerical value we need to compare with.