The crate containing 40 bricks sits on a slopped conveyor belt which is used to

Question

The crate containing 40 bricks sits on a slopped conveyor belt which is used to raise the crate to the next level of the factory at a constant speed When the conveyor was installed it was determined through safety checks that at an angle of 30o the crate would begin to slip down the slope Calculate the length of the conveyor belt shown Calculate the coefficient of friction between the crates and the conveyor belt. This task gives opportunities to provide evidence toward Assessment Criteria P15 & P17. Explain each of the following in relation to friction Journal friction Bearing pressure Sliding friction Rolling friction This task gives opportunities to provide evidence toward Assessment Criterion P16.

Explanation / Answer

12
a) Sin 25 = 12/x
x = 12 / Sin25 = 28.4 m

b) mg Sin 30 = *mgCos30

= Tan30 = 0.577

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