exam Maths Puzzle Numerical Ability

A wire from the pivot P suspends a ball, m. The tension or force in the wire, T, when the ball m is swinging through the lowest point is given by the function:

T(r) = mg + (mv^

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exam Other Question

A vector has the following initial and terminal points respectively:
initial point (-1,2)
terminal point (4,6)
What is the position vector? Give an example of a rational expression P/Q such that: The degree of the denominator Q is 3 and this expression is defined for all real numbers except the values 2 and 4.