4. Measurement and Effects of Force
Force is a vector quantity that causes an object to change its state of motion or shape, measured in Newtons (N). Various types of force, including contact and non-contact forces, influence motion, leading to effects such as changes in velocity, shape, and rotation. Understanding Newton's laws, the measurement of force through instruments, and the role of friction is essential for grasping the applications and implications of force in mechanical systems.
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What we have learnt
- Force is a vector quantity with the SI unit of Newton (N).
- Newton's laws of motion describe the relationship between force, mass, and acceleration.
- Friction is a resistive force that opposes motion and can be calculated using specific formulas.
Key Concepts
- -- Force
- A vector quantity that causes an object to change its state of motion or shape.
- -- Newton's Laws of Motion
- Three fundamental laws that describe the relationship between the motion of an object and the forces acting on it.
- -- Friction
- A resistive force that opposes the relative motion between two surfaces in contact.
- -- Moment (Torque)
- The rotational effect of a force, calculated as the product of the force and the perpendicular distance from the pivot point.
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