Question

Three identical cuboids a.b and c having masses 5kg.6kg and 7kg respectively are kept on wheat flour in a similar position.which of three will exart minimum pressure on the flour

Answer 1

since cuboids r identical therefore area will remain same..hence it will depend upon the force..and. here force is normal force....
pressure is directly proportional to force.. n here force is mg i.e. object with higher mass will exert more pressure...
therefore block having mass 5 kg will exert minimum pressure...