Force
ICSE · Class 10 · Physics
Quick revision notes for Force — ICSE Class 10 Physics. Key concepts, formulas, and definitions for last-minute revision.
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1. Force and Types of Forces
- Force is a push or pull applied by one body on another body.
- A force can change the state of motion, the size, or the shape of a body.
- Forces are of two main types: contact forces and non-contact forces.
2. Units of Force
- The C.G.S. unit of force is dyne.
- The S.I. unit of force is newton.
- One dyne produces acceleration of 1 cm/s^2 on 1 gram mass.
3. Newton's Laws of Motion and Equations of Motion
- Newton’s first law is also called the law of inertia.
- A body remains in its present state until an external force is applied on it.
- Newton’s second law states that the rate of change of momentum is proportional to the applied force.
4. Motion, Moment of Force, Couple, and Equilibrium
- Motion is a change in the state of a body with respect to its surroundings.
- Translational motion is motion in a straight line in the direction of force.
- Rotational motion is motion when a body turns about a fixed point or axis.
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