Circular motion: Angular displacement: When a particle is in circular motion about an axis or centre, the angle described by the radius about the axis or centre is called angular displacement. A particle rotates in a circular path of radius r about the centre O. The particle moves from A to B through the circumference […]
Explore MoreDisplacement – time graph: i). The slope of displacement – time graph gives velocity. A and B are two points on the graph and AC is parallel to x axis and BC is perpendicular to AC. The change in displacement is BC = and the change in time is AC = . The slope of […]
Explore MoreVertical motion: 1. When a body is dropped from a height under gravity and neglecting the resistive forces, then, initial velocity of the body (u) is zero. The acceleration of the body is a = g. The velocity of the body at time t is v = gt [using v = u + at]. The […]
Explore More1. Prove v = u + at: Let us consider a particle is moving with uniform velocity u. Then it accelerates uniformly with a and after time t its final velocity is v. The change in velocity is (v – u) for time t. The acceleration of the particle is a . Or, Or, at […]
Explore MoreDistance: The length of the actual path travelled by a particle between the initial and final position of it in a given interval of time is called distance. Distance is the scalar quantity. SI unit of distance is meter (m) and dimension is [L]. Displacement: The shortest distance travelled by a particle between the initial […]
Explore MoreTypes of motion: 1. Translation motion: A body has translation motion if a line joining any two points on the body remains parallel to itself throughout the motion of the body. (a) Rectilinear motion: When the translation motion takes place along a straight line then the motion is called rectilinear motion. Example – A ball […]
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