1. Force
Force is a crucial concept in physics, defined as a push or pull that can alter the state of motion or shape of an object. It can result in acceleration, deceleration, or change of direction. The chapter covers various types of forces, the principle of moments, equilibrium, and mechanical advantages of machines, providing essential knowledge for understanding physical interactions and simple machines.
Enroll to start learning
You've not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Sections
Navigate through the learning materials and practice exercises.
What we have learnt
- A force can change the speed, direction, or shape of an object.
- Resultant force is the single force equivalent to multiple forces acting on a body.
- The principle of moments states that for equilibrium, the sum of clockwise moments equals the sum of anticlockwise moments.
Key Concepts
- -- Force
- A physical cause that can change the state of motion or shape of a body.
- -- Resultant Force
- The single force that produces the same effect as multiple forces acting on a body.
- -- Moment of Force
- The turning effect of a force about a point or axis, calculated as Moment = Force × Perpendicular distance from pivot.
- -- Equilibrium
- A state in which a body experiences no net force, meaning the resultant force acting on it is zero.
- -- Mechanical Advantage (M.A.)
- The ratio of the load to the effort applied in a machine.
- -- Efficiency
- The ratio of useful work done by a machine to the total energy expended, expressed as a percentage.
Additional Learning Materials
Supplementary resources to enhance your learning experience.