The fig above shows a uniform wood of weight 200Nand length 50m. It is pivoted at one end and suspended by a cord at the other end at an angle of 30 degrees to the wood. calculate the tension in the cord if the wood is horizontal
In the fig above if the atmospheric pressure is 760mm, the pressure of the chamber G is
In the fig above, XY is of length 1m, The value of R at balance point Z is
In the circuit diagram above, calculate the current in the 12 Ω resistor if the cell has an emf of 12V and an internal resistance of 1Ω
