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For an object to float, the mass of the water displaced must be _____________ the mass of the object.

less than

equal to

greater than

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On earth, you can substitute the term weight for mass.
Assume a dense object. If an object has density greater than that of the fluid in which it is submerged, it tends to sink. If the object is either less dense than the liquid or is shaped appropriately (as in a boat), the buoyancy force can keep the object afloat. This can occur only in a reference frame which either has a gravitational field or is accelerating due to a force other than gravity defining a "downward" direction (that is, a non-inertial reference frame). In a situation of fluid statics, the net upward buoyancy force is equal to the magnitude of the weight of fluid displaced by the body. If the buoyancy of an (unrestrained and unpowered) object exceeds its weight, it tends to rise. An object whose weight exceeds its buoyancy tends to sink.
For practical common purposes, substitute "weight of water" for buoyancy. But the shape of the object has an integral part to play! For example, a 3 gram ball bearing might sink immediately, whereas a 3 gram sheet of steel might not, if shaped sufficient to permit buoyancy.

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Equal I think.. good question though

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equal

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equal to!

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Greater if you want it above but equal the top of the object would be on the water line do if say greater

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Actually equal! of it is less than the mass of the object then if will sink. And you should pull it down to get it greater than the mass of the object. When you remove the force it will pop up from the water!

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