a bottle is given a push along a tabletop and slides off the edge of a table. neglect air resistance. a) what force are exerted on the bottle while it is falling from the table to the floor? b) what is the reaction to each force ,that is, on what body and by what body is the reaction exerted?
(a) gravity (the bottle's weight)
and air resistance
b) There are opposing reactions of the bottle upon the earth and upon the atmosphere.
what if air resistancec is neglected. is it the same as this??
a) The only force exerted on the bottle while it is falling from the table to the floor is the force of gravity. This force is pulling the bottle down towards the Earth.
b) According to Newton's third law of motion, for every action, there is an equal and opposite reaction. In this case, the reaction to the force of gravity acting on the bottle is the force of the bottle pushing back on the Earth. So the reaction to the force of gravity is exerted by the bottle on the Earth.
To answer these questions, we need to consider Newton's Third Law of Motion, which states that for every action, there is an equal and opposite reaction. Let's break down the questions one by one:
a) What force is exerted on the bottle while it is falling from the table to the floor?
The force exerted on the bottle while it is falling is the force of gravity or the weight of the bottle. This force is pulling the bottle downwards towards the floor. The force of gravity depends on the mass of the bottle and the acceleration due to gravity, which is approximately 9.8 m/s^2 on Earth.
b) What is the reaction to each force, that is, on what body and by what body is the reaction exerted?
According to Newton's Third Law, the reaction to the force exerted on the bottle while it is falling is an equal and opposite force exerted by the bottle on the Earth. This phenomenon is known as the "action-reaction pair." So, while the Earth pulls the bottle downwards, the bottle also exerts an equal and opposite force on the Earth upwards.
In summary:
a) The force exerted on the bottle while it is falling is the force of gravity.
b) The reaction to this force is an equal and opposite force exerted by the bottle on the Earth.