A bead P of mass m slides down a smooth wire fixed in a vertical plane, which is bent into the form of the catenary S= c tanψ, with its axis is vertical and its vertex at its lowest point. The bead is given a velocity along the tangent when at its highest point. Prove that the velocity of the bead is given by and the bead will leaves the wire when cos ψ = 2/3

33

Step-by-step explanation:333=33

irrational, cannot

the total estimated nappy use.=10,500,000

step-by-step explanation:

given that on an average the average baby uses 3528 napkins.

in a particular year 2014, the number of births were 299697 in new south wales.

rounding off the number of births to the nearest hundred thousand we have

no of birtsh = 300000

also rounding off the average usage to nearst thousand we get

average use of a baby = 3500

hence total number of nappy estimated to be used = 3500x300000

= 10,500,000

answer is 10,500,000 nappies