The object being in its motion due to the applied force is said to be in a state of motion.
It certainly means that the object is doing some work and is not in its state of rest. The object is moving with a certain velocity in a particular direction of the force applied. The following is a list of state of motion examples that we are going to discuss in this topic:-
Bouncing Ball
The bouncing ball is in a continuous motion moving up and down the ground varying its kinetic and potential energy.
The potential energy of a ball is high when it is raised to the greatest point of its height during bouncing. This potential is converted into kinetic energy and potential energy is the minimum when the ball reaches the ground surface. The ball keeps on bouncing till the energy of the ball becomes zero.
Airplane
The airplane is in a state of motion high in the airways. While taking a flight, the airplane makes enough thrust on the ground to lift its body upward. Here Newton’s third law of motion comes into the picture.
Running
This is also a state of motion and the speed of the person running can be calculated by measuring the distance he covers in a given time.
For running, a person uses a muscular force, and the stored chemical potential energy is converted into kinetic energy while running.
Pulling a Cart
A bull pulling a cart is in a state of motion. The bull applies the muscular force to pull the cart.
In old days bull carts were used to migrate and carry away the load. The force applied by the bull to pull the cart is equal to the acceleration of the cart and the sum of the mass of the cart and the weight loaded on a cart.
Swing
A swing is displaced to a certain angle of oscillation from its resting position to set it in a state of motion.
The relative velocity of a person sitting stable on the swing is the speed of a swing. The angle of oscillation of the swing decreases at every oscillation if no more external force is applied to the swing.
Spinning Top
On giving a spin to the top, it is set into a state of spinning motion. The gyration of the spinning top is in relation to the angle made with the axis of rotation. This angle increases as the point of the gravity due to the moment of inertia of the top diverge away from the symmetrical axis.
Pulley
While drawing water from the well, the frictional force applied on the surface of the pulley by the rope sets the pulley in the state of motion and it accelerates at a rate equal to the rate of pulling the rope.
The pulley helps in reducing the efforts while drawing the water by changing the direction and amount of the force applied.
Satellites Around the Planet
The satellites are continuously rotating around the planet at a constant rate and at a fixed distance. The planet exerts a gravitational pull on the satellite and prevents them from escaping from its orbit of rotation.
Slider
A girl sliding or a slider is in a state of motion.
The sliders are made up of a plane and smooth surface. If the surfaces were rough then the girl would have not to slide due to the frictional force. The frictional force is more in the case of a rough surface.
Playing with Ring
While passing a ring, a ring is in a state of motion. The ring is thrown from one player to another by applying a force by moving a hand at an angle. The acceleration of a ring depends upon the amount of force at which it is thrown in the air.
Ferries Wheel
The ferries wheel is accelerating in a centripetal motion rotating at a fixed axis of rotation. The ferries wheel is accelerating it is said to be in a state of motion.
The potential energy acquired by the body of a passenger at the greatest point on a ferries wheel is the highest which is converted into kinetic energy. Hence while accelerating downward the person feels light in weight and while accelerating in the upward direction against the gravity, the person feels heavier in weight as more force is imposed on the body.
Grinding Coffee
To grind a coffee to a fine powder you rotate the churner.
Hence while grinding the coffee your hands are in a state of cyclic motion.
Slinky Climbing down the Stairs
If you keep a sling on the stairs, it will automatically climb down the steps converting the potential energy into kinetic energy and kinetic energy back to potential energy. Due to the conservation of energy by the slinky this state of motion is possible.
Sawing
For sawing wood, you move your hand back and forth to penetrate the blade through the wood and cut the pieces into halves.
Hence your hands are in a state of motion while sawing.
Typing
While typing your fingers are in a state of motion. Every time you apply a push force to press the button on the keyboard and insert the keys digitally.
Fan
Upon supplying power to the electric fan, it will keep on rotating at a fixed rate.
The state of motion of the fan is defined as the centripetal motion rotating at a constant axis of rotation.
Driving a Car
A car is in a state of linear motion while driving. The energy is supplied to the car by the combustion of the diesel used in the tank of the car.
Frequently Asked Questions
Is skiing a state of motion?
The relative velocity of a skier with respect to the skiing board is zero.
While skiing the skier is in linear motion and not stable at one point and hence is in a state of motion.
Is standing in a queue a state of motion?
If there is no motion of an object and the object is at a rest then it is not the state of motion.
Standing in a queue without any activity implies there is no motion of a person and hence it is not a state of motion.
Also Read:
- Projectile motion problems
- Repetitive motion examples
- Relative motion examples
- Displacement in circular motion
- Curvilinear motion examples
- Projectile motion derivation
- Periodic motion vs simple harmonic motion
- Lens for capturing emotions
- Periodic motion examples
- Relative motion in friction
Hi, I’m Akshita Mapari. I have done M.Sc. in Physics. I have worked on projects like Numerical modeling of winds and waves during cyclone, Physics of toys and mechanized thrill machines in amusement park based on Classical Mechanics. I have pursued a course on Arduino and have accomplished some mini projects on Arduino UNO. I always like to explore new zones in the field of science. I personally believe that learning is more enthusiastic when learnt with creativity. Apart from this, I like to read, travel, strumming on guitar, identifying rocks and strata, photography and playing chess.