ICSE Class 10 Physics — Flashcards for Quick Revision

A: Force is a push or pull applied on a body that can change its state, size, or shape. Examples: (1) Kicking a football changes its state of rest to motion (2) Loading a spring changes its dimensions by

A: Contact forces act only when objects are in physical contact with each other. Three types are: (1) Frictional force (2) Normal reaction force (3) Tension in a string

A: Non-contact forces act without physical contact between bodies (action at a distance forces). Examples: (1) Gravitational force - attracts objects toward Earth (2) Electrostatic force - between charge

A: Work is said to be done when a force is applied on a body and the body is displaced from its initial position. Work is done only when there is displacement under the influence of applied force. If the

A: Work done = Force × Displacement W = F · s Where: - W = Work done (measured in joules) - F = Applied force (measured in newtons) - s = Displacement in the direction of force (measured in meters) Whe

A: 1. When θ = 0° (force parallel to displacement): W = F × s × cos 0° = F × s (Maximum positive work) Example: Gravitational force on freely falling body 2. When θ = 90° (force perpendicular to d

A: A machine is a device that helps us overcome a large resistive force (load) by applying a smaller force (effort) at a convenient point and direction, or obtain gain in speed. Main functions: 1) Force

A: Mechanical Advantage is the ratio of load (resistance overcome) to the effort applied. Formula: M.A. = Load (L) / Effort (E). It has no unit as it's a ratio of same physical quantities. When M.A. > 1,

A: Velocity Ratio is: 1) Ratio of velocity of effort to velocity of load: V.R. = VE/VL, or 2) Ratio of distance moved by effort to distance moved by load: V.R. = dE/dL. It has no unit and remains constan