An upthrust is a type of force that acts opposite to gravity, pushing an object upward. It occurs when the buoyant force acting on an object submerged in a fluid is greater than the weight of the object, causing it to rise to the surface. This phenomenon is commonly observed in objects floating in water.
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No, upthrust is not a scalar quantity. It is a vector quantity as it has both magnitude and direction. Upthrust is the upward force exerted by a fluid on an object immersed in it, and its direction is always opposite to the direction of gravity.
Upthrust is a Contact Force. :)
The submarine will sink if its weight is greater than the upthrust acting on it. Upthrust is the force pushing an object upwards in a fluid, such as water. When an object's weight is greater than the upthrust, it will sink.
The force that acts against upthrust is gravity. Gravity pulls objects downward, opposing the buoyant force provided by upthrust.
To find the upthrust needed to keep a 1600 N object afloat, you need to consider the weight of the object. The upthrust must equal the weight of the object for it to stay afloat, so the upthrust required would be 1600 N.