Numerical Problems | Chapte 7 Properties of Matter | Physics 9th | Balochistan Text Book Board Queta скачать в хорошем качестве

Numerical Problems | Chapte 7 Properties of Matter | Physics 9th | Balochistan Text Book Board Queta

Calculate the density of 208kg of an object measuring 8m×5m×4m. A solid sphere has a radius of 1.5cm and mass 0.038kg. What is the density of the sphere. The head of pin is a square of side 10mm. Find the pressure on it due to a force of 20N. A block measuring 0.2m×0.5m×1.0m has a mass of 250kg. (i) What is the maximum pressure it can exert on the ground? Show with diagram (ii) What is the minimum pressure it can exert on the ground. Show with diagram. In a hydraulic press the large piston has an area of cross-section A_1=200〖cm〗^3 and the small piston has cross-section area A_2=5〖cm〗^2. If the force of 250N is applied to small piston, what is the force on the large piston? A 2cm diameter cylinder is subjected to a load 500kg calculate the stress on the cylinder. A wire 5m long and cross-section area 0.01m^2 is stretched 1mm by a force of 100N. Calculate (i) Stress (ii) Strain (iii) Young’s Modulus An Iron rod 4m long and 0.5〖cm〗^2 area of cross-section stretches 1mm when a mass of 225kg is hung from lower end. Calculate the Young’s modulus for the iron. Take g=10〖ms〗^(-2)=10N〖kg〗^(-1)