K.C.S.E Physics Q & A - MODEL 2009PP1QN04&5

K.C.S.E Physics Q & A - MODEL 2009PP1QN04&5

​ Figure 2 shows two cylinders containing a liquid and connected with a tight – fitting flexible tube. The cylinders are fitted with air- tight pistons A and B as shown

​When equal forces, F are applied on the pistons as shown it is observed that piston A moves up while B moves down. Explain this observations

answer

• When equal forces  applied, pressure on B  is greater than on A due to smaller area./ pressure differences  is transmitted through to liquid causing rise  upward. Force on A is greater than hence upward tension.