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A block mass m lies on an incline rough plane, with coefficient of friction µ. The angle of the block is increased slowly, calculate the maximum angle of the slope that can be achieved without the block slipping.

First draw out the free body diagram for the problem, marking on all forces acting on the objects ie. the mass of the block and the reaction force normal to the plane and the forces acting due to friction. A...
CA
Answered by Cameron A. • Maths tutor
4827 Views

Given that the binomial expansion of (1 + kx) ^ n is 1 - 6x + 30x^2 + ..., find the values of n and k.

Setting (1 + kx) n equal to 1 - 6x + 30x 2 + ..., the binomial expansion can be applied to the LHS, by making use of the formula provided in the formula book. In this case, where x appears in the formula boo...
SG
Answered by Sanchit G. • Maths tutor
14986 Views

We are given so much information for each topic... how do I know which bits are relevant for a particular question?

It can be so hard to identify which of all the masses of facts and figures and definitions you have learnt you need to include for a particular question, especially given the degree to which topics and theme...
JF
2334 Views

How do you form the passive voice?

Firstly, let’s explain what the active voice is: it’s where the subject of the sentence performs the action of the verb (this is the type of sentence you’re most familiar with).The passive voice is basically...
KJ
Answered by Katerina J. • French tutor
2440 Views

Why does the climate change over time?

Throughout the history of the Earth, the climate has always been changing. This is clear from evidence of cycles of glacial advance and retreat. However the last ice age ended abruptly and this can be associ...
RB
Answered by Rosie B. • Geography tutor
2626 Views