4. Calculate the apparent weight of wood
floating on water if it weighs 100g in air.
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If a body of mass 100 g is floating in water, it will experience an up thrust due to water displaced by immersed part of the body. For a floating body, upthrust will be equal to the weight of the body. Therefore, the apparent weight of the body will be zero (i.e., the weight of the body in air - upthrust).
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