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
A pulley works by changing the direction that force must be applied to lift an object against gravity. Other, more complex, systems use multiple pulleys to reduce the amount of force that must be applied.Full Answer >
One idea for a Newton scooter project involves taping an inflated balloon to a homemade scooter with the open end in the direction of the wheelbase. Upon letting go of the balloon, the scooter moves in the opposite direction of the air. Using different types of balloons yields different results.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 fixed pulley makes work easier by changing the direction of the force required to lift a load. To raise a load with a fixed pulley, a downward force is needed, which is easier than the upward force needed to lift the load directly.Full Answer >