It is a force which acts in the upward direction.
Chat with our AI personalities
If something is falling down, air resistance pushes it up. Therefore, air resistance is an upward force.
Weight of the elevator = 1000kg x -9.8m/s2 = -9800N Upward force acting on the elevator = 1000kg x 2m/s2 = 2000N Net force = upward force - weight of elevator = 2000N - (-9800N) = 11800N
Scales are intended to measure some downward force acting on the scale, which is the weight of the object placed on the scale to be weighed, but it is also true that the downward force is necessarily balanced by an equal and opposite upward force, otherwise the scale would be forced downward (which would be very awkward since it would break through the floor and create quite a mess).
4102.6lbs per square inch
0.98N, if the value of gravity is a constant at 9.8m s^-2.
Upwards is a compound word.