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A block of mass 5kg is on a rough slope inclined at an angle of 30 degrees to the horizontal, it is at the point of sliding down the slope. Calculate the coefficient of friction between the block and the slope.

If the block is at the point of sliding, we know the frictional force, F, is at it's maximuim, F = kR, where k is the coefficient of friction and R is the reaction force.As we know the mass of the block, ...

Answered by • Maths tutor

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work out the area of a trapezium where the height is 4mm, the top length is 8mm and the bottom length is 12.5mm

the formula for area of a trapezium = 0.5(a+b)htherefore, a = 8, b = 12.5, h = 4therefore, the total area would be 41mm squared

Answered by Rianna P. • Maths tutor

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Factorise the following equation: x^2 + x - 6

Answer: (x+3)(x-2)

Answered by Eli N. • Maths tutor

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Use the formula 5p + 2q = t to find the value of q when p = 4 and t = 24. 6

5p+2q=t 5*4+2q=24.6 20+2q=24.6 2q=24.6-20 2q=4.6 q=4.6/2 q=2.3

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Simplify (x+4)^(2)-(x-2)^(2)

Treat the question, (x+4)²-(x-2)²as a²-b² where we can simplify as (a+b)(a-b). ie. (x+4+x-2)(x+4-x+2) *be careful about change of signsWe then get (2x+2)(6) wh...

Answered by Loreen T. • Maths tutor

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