K.C.S.E Physics Q & A - MODEL 2006PP1QN17

K.C.S.E Physics Q & A - MODEL 2006PP1QN17

​(a) state Archimedes principle 
(b) in an experiment to determine the relative density of methylated spirit applying Archimedes Principal, the following were provided, a spring balance, some masses, a piece of thread, water in a beaker and methylated spirit in a beaker. The table below shows the results obtained.

(i) Draw labeled sketch diagrams to show how the readings in the table were obtained
(ii) For each mass, determine the upthrust in water and the upthrust in the spirit
(iii) Determine the average relative density of the spirit
(c) A weather balloon of volume 1.2m³ is tied to a rigid support while being filled with helium gas. The mass of the fabric making the balloon is 0.30kg.
Determine the maximum tension on the string trying the balloon to the rigid support

ANSWERS