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# Category: A-level mechanics

### Pressure in liquids, density, viscosity, Bernoulli’s principle ( A-level physics)

Pressure in liquids This is the force exerted normally per unit area. The SI units of pressure of liquids are Nm-2 or Pascals (pa) The ... Read More

### Kepler’s law of planetary motion and gravitational constant (A-level physics)

Kepler’s Law of Planetary Motion Planets revolve in elliptical orbits having the sun at one focus Each planet revolve in such a way that the ... Read More

### Simple harmonic motion (A-level physics)

Simple harmonic motion It a special type of periodic motion in which the acceleration of the body along the path of the body is directed ... Read More

### Surface tension (A-level physics)

Surface tension Common observation explained by surface tension  A drop of water, on closing a tap remained dinging on the tap, as if the water ... Read More

### Circular motion, unbanked road, banked road, horizontal circular motion, vertical circular motion (A-level physics)

Circular motion This is the motion of an object moving in a circular path with a uniform speed around a fixed point O. consider a ... Read More

### Work, power, energy (A-level physics)

Work, power, energy - (A-level) Work is the product of force and distance moved. This distance must be in the direction of the force. Consider ... Read More

### Friction, coefficient of friction-A level physics

Solid friction Friction is the forces that oppose the relative motion of two surfaces in contact. The direction of the friction force is opposite to ... Read More

### Linear momentum (A-level physics)

Linear momentum Linear momentum is a product of the body’s mass and its velocity. The S1 unit of momentum is kgms-1 When a force F ... Read More

### Newton’s laws of motion (A-level physics)

Newton’s laws of motion First Newton’s law of motion. A body remains in its state of rest or uniform motion in straight line unless an ... Read More

### Scalar and vector quantities and resolving of forces (A-level physics)

Scalar and vector quantities Scalar quantities are physical quantities which have only magnitude; for, example speed, mass, volume, energy, time and temperature. Vector quantities are ... Read More

### Motion under gravity and projectiles (A-level physics)

Motion under gravity In absence of any resistance, all bodies regardless of their mass fall with same acceleration near the earth’s surface. Acceleration due to ... Read More

### Linear motion, equations of motion (A-level physics)

Linear motion Terms used Displacement is the distance moved by a body in a specific direction Velocity is the rate of change of displacement Uniform ... Read More