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Interactions through the application of forces - Coggle Diagram
Interactions through the application of forces
Types of forces
Non-Contact force
Eg. Gravitational force, Electrostatic force and magnetic force
Contact force
Eg. Frictional force
Measuring force
Compression spring balance
Extension spring balance
Mass and Weight (Mass is always the same)
mass on earth is 60kg but weight is 600N
mass on moon is 60kg but weight on moon is only 100N
Effects of Forces
such as
pressing a button in a lift
squeezing a tube of toothpaste
opening a window door
Turning on the tap
on the size or shape of an object
When we apply a force to knead a lump of plasticine, the shape of the object changes
When we mould a lump of wet clay, the size and shape of the object changes
on the motion of an object
if a rolling ball were to be touched gently by the hockey stick tis will cause the ball to change direction
if one were to exert force on a rolling ball that is coming his or her way this will cause the ball stop
A ball is stationary, by striking the ball it applies a force on the stationary ball to make it move
Speed, Force and Pressure
Speed
Formula of speed: Speed=Distance traveled/time taken
Speed is the distance traveled per unit time
Forces
Turning effect of forces on an object
Eg. When one applies force on the handle of a crowbar or on a fishing rod or when one applies an upward force on the handles of wheelbarrow this makes it easier to move the heavy load
When we open the door, we apply a force on the door knob makes the door rotate at the hinges and this force is called the turning force
Pressure
Formula for pressure: Pressure=Force/Area
Pressure is the amount of force acting perpendicularly on a unit area
Pressure is an effect of a force acting on an object. The amount of pressure exerted depends in the amount of force and the are on which the force acts on