A flower basket is hung from the end of a uniform horizontal pole which projects from a wall, as shown. The pole is supported by a cable attached to a higher point on the wall:
The pole has a mass of 10.0 kg; the flower basket has a mass of 14.0 kg.
a By taking moments about the right hand end of the pole, determine the value of the
tension in the cable T. [5]
b The wall exerts a force R on the pole. Deduce the horizontal component of R.

Auniform electric field exists in the region between two oppositely charged plane parallel plates separated by a distance of 1.60 cm . a proton is released from rest at the surface of the positively charged plate and strikes the surface of the opposite plate in a time interval of 3.20×10-6 s. 1-find the magnitude of the electric field. use 1.60×10-19c for the magnitude of the charge on an electron and 1.67×10-27kg for the mass of a proton 2-find the speed of the proton when it strikes the negatively charged plate