.............................................................. cm (Total 5 marks) ___________________________________________________________________________ is inversely proportional to the square of 14. F x. = 0.8 when = 5. F x (a) Find a formula for in terms of F x. ................................ (3) (b) Work out the positive value of when = 320. x F
.............................................................. cm (Total 5 marks) ___________________________________________________________________________ 14. F is inversely proportional to the square of x. F = 0.8 when x = 5. (a) Find a formula for F in terms of x. ................................ (3) (b) Work out the positive value of x when F = 320.