- #1
fk08
- 31
- 0
hello,
consider a man falling from a roof with a heavy box in his hands. what should he do with the box?
consider a man falling from a roof with a heavy box in his hands. what should he do with the box?
fk08 said:hello,
consider a man falling from a roof with a heavy box in his hands. what should he do with the box?
I think timing does matter without considering drag.DaleSpam said:Then the timing does not matter.
DaleSpam said:Good point. I think you are right, but I would have to work it out to be sure.
Sure, humans are to weak. It is hard enough to jump off the ground with the massive Earth as support. Pushing down a box or even an elevator cabin might give you enough force to cancel out the gravitational acceleration for a moment, but you would need much more to achieve an upwards acceleration that would slow you down significantly.vibjwb said:This may be helpful to you
http://mythbustersresults.com/episode17
This seems to be close to what are doing
The weight of the box does not affect its free fall velocity. In free fall, all objects accelerate at the same rate regardless of their weight, due to the force of gravity being constant.
Yes, if the box is falling through a fluid such as air, it will eventually reach terminal velocity. This is the point at which the drag force of the fluid balances out the force of gravity, causing the object to fall at a constant speed.
As mentioned, air resistance or drag force is a factor that can affect the free fall of the box. This force is dependent on the size, shape, and speed of the object and can slow down the acceleration of the box as it falls.
No, the box will always experience a net force of gravity pulling it downwards, unless it reaches terminal velocity. This is due to Newton's First Law of Motion, which states that an object will remain in motion unless acted upon by an external force.
The free fall acceleration of the box can be calculated using the formula a = g, where g is the acceleration due to gravity (9.8 m/s^2 on Earth). This assumes that there is no air resistance affecting the object's fall. If air resistance is present, the acceleration can be calculated using the formula a = (m*g)/m + k, where m is the mass of the object and k is the drag coefficient.