- #1
Weam Abou Hamdan
- 25
- 3
Hello,
Let us imagine a solid immersed in a liquid in a container such that the density of the liquid is less than the density of the solid. This means that the solid must sink. Let us study the solid when it reaches the bottom surface and is now at rest. The forces acting on the solid when it is at the surface are its Weight (W), the Normal Force (N) exerted by the bottom surface, and the Buoyant Force (FB) exerted by the liquid. According to Newton's First Law of Motion, since the solid is at equilibrium, the sum of these forces must be zero.
W = FB + N
Let us now study the same solid resting on the same bottom surface of the container such that there is no liquid. The forces acting on the solid in this case are its Weight and the Normal Force (N2) exerted by the same surface. According to Newton's First Law of Motion, since the solid is at equilibrium, the sum of the forces must be zero.
W=N2
Apparently, the magnitude of the Normal Force increased from the first case to the second case. What is the physical origin of such an increase?
Weam Abou Hamdan
Thursday, July 19, 2018
Let us imagine a solid immersed in a liquid in a container such that the density of the liquid is less than the density of the solid. This means that the solid must sink. Let us study the solid when it reaches the bottom surface and is now at rest. The forces acting on the solid when it is at the surface are its Weight (W), the Normal Force (N) exerted by the bottom surface, and the Buoyant Force (FB) exerted by the liquid. According to Newton's First Law of Motion, since the solid is at equilibrium, the sum of these forces must be zero.
W = FB + N
Let us now study the same solid resting on the same bottom surface of the container such that there is no liquid. The forces acting on the solid in this case are its Weight and the Normal Force (N2) exerted by the same surface. According to Newton's First Law of Motion, since the solid is at equilibrium, the sum of the forces must be zero.
W=N2
Apparently, the magnitude of the Normal Force increased from the first case to the second case. What is the physical origin of such an increase?
Weam Abou Hamdan
Thursday, July 19, 2018