CIE A Level Maths: Mechanics复习笔记4.1.2 Energy
Kinetic Energy There are many different forms of energy including, but not limited to, heat energy, light energy, chemical energy and nuclear energy. In this course we deal with a type of energy ca...
Kinetic Energy There are many different forms of energy including, but not limited to, heat energy, light energy, chemical energy and nuclear energy. In this course we deal with a type of energy ca...
Work What does the term work mean in Mechanics? In Mechanics the word work refers to the work done by a force when it causes an object to move Mechanical work happens when both a force is applied a...
Coefficient of Friction - Equilibrium How is friction used when a body is in equilibrium? When a body is in static equilibrium under the action of a number of forces, including friction, the value ...
Coefficient of Friction - Inclined Planes How is the coefficient of friction used in problems involving inclined planes? On an inclined plane the basic principles are the same as for coefficient of...
Coefficient of Friction - F = ma How do we apply Newton’s Second Law (F = ma) in problems involving friction? The coefficient of friction combined with F = ma allows you to determine an object's mo...
Coefficient of Friction What is friction? Friction is a force between a surface and an object that acts to resist motion of the object across the surface On a horizontal surface with no forces acti...
据英媒最新消息,英国最大的应届生雇主之一,普华永道宣布,取消对应届生2:1学位的成绩要求,2:2学位的同学在申请中多了一个机会。 图源:PWC 这意味着啥?代表说 2.2 学位的同学们在申请路上又多了一个选择啦!...
Resolving Forces If a single force is applied at an angle to the direction of motion it will need to be resolved into components of the force that act perpendicular to each other. Why resolve a for...
Connected Bodies - Pulleys What is a pulley (or peg)? A pulley is a wheel like device that rotates as a string passes over it allowing motion of any particles attached to the string The term ‘strin...
Connected Bodies - The Lift Problem What is the lift problem? The lift problem involves objects (particles) that are directly in contact with each other – typically a person or crate in a lift If i...
Connected Bodies - Ropes & Tow Bars What are connected bodies/particles? The phrase connected particles refers to situations where two (or more) bodies (objects) are connected in some way. Comm...
F = ma What is Newton’s First Law of Motion (N1L)? An object at rest will stay at rest, and an object moving with constant velocity will continue to move with constant velocity, unless an unbalance...
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