who can please evaluate to me the motion of an object under the influence of a constant net force?

Question

please do elaborate well, for me to understand too.


---extended thanks :-)

Answer 1

What I think you mean to ask is: What is the motion of an object under a constant net force.

Here's the answer. f = ma = constant; where f is that net constant force acting on a body of mass m that is accelerating at a. This is Newton's second law...good old f = ma.

Thus f/m = constant/m = a, which is the acceleration and, as you can see, under a constant net force, the body is accelerating all the time at a constant rate (m/sec^2 or ft/sec^2 for example).

It is noteworthy that if f = 0 = ma; where the sum of all forces acting on the object m is zero, so there is no net force, the object is no longer accelerating. a = 0. This means, if the object is already moving, it will move at a constant velocity v = constant. But if that object is not moving, it will stay at rest v = 0 because it is not accelerating or decelerating.

Answer 2

It depends on the type of friction. If im pushing a 15N dresser with 16N force, it will move to the direction i want it to, but if theres the force of friction applied, if i push with 16N and the friction is 2N + 15N of the dresser, I won't be able to overcome the Opposing force. If i reduce the friction with lubricants/ alternate friction(rolling friction via wheels) I have a better chance of moving the object
Ex.
w/o variation(sliding friction)
16N-(15N+2N)= -1N= no movement.
Ex.2
w/ variation(rolling friction,lubricant etc.)
16N-(15N+.5N)= .5N= movement.
Surface Area that is touching can also alter the total friction. (stand it on the pegs no the side)
hey no fair " top contributor"!!!
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