A small army of learning to swim in the swimming pool, he to deep water away, feeling lighter. He concluded that divers in the water dive, dive deeper, he received greater buoyancy. Go with a small army of Xiaohua think inference is wrong. He sent to the laboratory existing the following equipment: balance and weight, spring dynamometer, pressure gauge (U tube in liquid water), cylinder, beaker, scale, small cube cube small pieces of wood, aluminum block, overflow water cup, water and fine lines, some equipment he chose the design of an experiment, and is wrong according to the the phenomenon that the small army of inference. Please write the required experimental equipment, experimental steps Xiaohua and analysis of small army inference is wrong. The design requirements of the experiment is feasible, and in accordance with the principle of safety.
With a small aluminum block thin tie hook in the spring ergometer, the number of G in measure and record the spring ergometer;The aluminum block is submerged in water at a certain depth, measure and record the spring dynamometer shows the number of F
(1) experimental equipment: Spring dynamometer, cube small aluminum block, beaker, water and fine lines;(2) experimental procedure: proper amount of water is placed in the beaker;
The aluminum block is submerged in water another depth, measure and record the spring dynamometer shows the number of F 2;(3) analysis and demonstration: if G-F 1, =G-F 2, the small aluminum blocks are immersed in water, and the buoyancy is the same at different depths. It means that the small army's inference is wrong
