Angular velocity = 7.3 x 10 -5 rad/s. thus, the speed of any point on the earth's surface at the equator due to earth's rotation is, V = r $\omega$ = 6.4 x 10 6 x 7.3 x 10 -5 m/s = 470 m/s. The examples based on Rotational Speed are given below : Back to Top.
Sarking is a layer of flexible insulation typically installed under roof tiles when a home is being constructed.It consists of aluminum foil laminated onto paper or plastic backing with a flame retardant adhesive and fibreglass reinforcing mesh, and is manufactured in sheet form.Sarking performs a dual function, helping to keep your home insulated from the heat of summer whilst retaining warmth in the winter.t consists of aluminum foil laminated onto paper or plastic backing with a flame retardant adhesive and fibreglass reinforcing mesh, and is manufactured in sheet form. Sarking performs a dual function, helping to keep your home insulated from the heat of summer whilst retaining warmth in the winter.
As Sarking (or underlay), I refer to the waterproof membrane put under the battens of the roof. It is very important, because helps in regulating the temperature of the house, and to protect it from insects and wind. Without a good sarking, the roof would become moldy, and your tiles will look dirty green. sarking like that will have to be changed in few years time, and would be very costly. The sarking is the underlay of the roof, and a strong roof needs a strong sarking. Pay attention to that.