motion of the needle of a sewing machine is what is the motino is this?
yes is motion
That would have to be perpetual motion
The motion of the needle in a sewing machine is vertically, rapidly up and down.
Due to surface tension, the upper surface of water acts like a stretched membrane which enables it to float a swing needle.
Yes. the needle uses reciprocting motion
In human bipedal walking, "arm swing" is the natural motion of the arms swinging in motion with the opposing leg to prevent the body twisting.
Perpetual motion.
A body undergoes simple harmonic motion if the acceleration of the particle is proportional to the displacement of the particle from the mean position and the acceleration is always directed towards that mean. Provided the amplitude is small, a swing is an example of simple harmonic motion.
swing, pendullim in a clock, printer inside
Force of tension, exerted from the swing rope, keeps the swing moving in the horizontal back and forth motion. The force of gravity keeps the swing from staying at the far right or far left because it always wants the swing to be pulled to Earth, but the force of tension wants to keep it up. Air resistance, like friction, eventually slows the swing down to a halt.
a swing is basically a pendulum, meaning it oscillates as simple harmonic motion. It is not much different from a mass on a string in other words
swing your arms in a circular motion as hard as you can with oars and in the water