Forces that are equal in size but opposite in direction are called balanced forces. Balanced forces will not change the motion or move an object at rest. On the other hand, forces that are not equal or opposite and do cause a change in the motion of an object are known as unbalanced forces.Know More
Any type of pulling or pushing is considered force. To understand a force, someone must know its size and also its direction. There can be more than one force acting on an object. Consider a system comprising a paper clip, a human and a magnet. The human moves the magnet, and the magnet moves the paper clip. The combination of these forces is called the net force. If there are two forces going in the opposite direction then the net force is the difference between the two forces.
The game tug-of-war is a good example to describe each type of force. If both teams are unable to move then that would be considered balanced since equal forces are pulling in opposite directions. If one side pulls the other side across the line, therefore winning, an unbalanced force is created in order to pull the other team and win the game. Unbalanced force changes the motion of an object in two ways. When unbalanced forces act on an object at rest, the object is moved and also the velocity is changed, meaning a change in speed and direction.Learn more about Motion & Mechanics
The general formula for finding speed is x = d / t, where "x" denotes the speed, "d" indicates the distance traveled and "t" represents the time it takes to cover "d." Speed is a scalar quantity that is entirely defined by its magnitude without referencing its direction.Full Answer >
A first-class lever, in which the fulcrum is between the load and the effort, can aid in work by changing the direction of the force and by increasing the efficiency or mechanical advantage of the force applied. The force exerted on a first-class lever has greater mechanical advantage proportional to its distance from the fulcrum.Full Answer >
The difference between scalar and vector quantities is that the former only provides numerical data or magnitude, while the latter also provides direction in addition to magnitude. Examples of scalar quantity include mass and speed (e.g., 12 kg, 5 m/s), while velocity (e.g., 6 m/s, north) and acceleration (e.g., 2 m/s^2, east) are examples of vector quantities.Full Answer >
A pulley is a simple tool that can be used for many things, such as lifting heavy objects or to change the direction of applied forces for various means. A pulley is a very simple tool that consists of a wheel on a fixed axle that has grooves for keeping a rope or wire in place. This makes pulleys useful for lifting heavy objects using applied human force.Full Answer >