The basic information of angular displacement, angular velocity and angular acceleration is given in Free Course-Class 9 Motion. To get this click the button. Click here Unit vectors along the radius and tangent: Let us consider OX and OY are two mutual perpendicular axes and O is the origin. A particle is moving in a […]
Explore MoreFriction due to relative velocity: A block A of mass M is placed on horizontal table. Another block B of mass m is places on block A as shown in figure. Now v1 and v2 (v1 < v2) are the velocities of A and B respectively. The conditions are explained below.1. The coefficient of static […]
Explore MoreA block A of mass M is placed on horizontal table. Another block B of mass m is places on block A as shown in figure. Now F force is applied on A. The conditions are explained below. 1. If there is no friction between A and B and between A and table, then A […]
Explore MoreA block A of mass M is placed on horizontal table. Another block B of mass m is places on block A as shown in figure. Now F force is applied on B. The conditions are explained below. 1. If there is no friction between A and B and between A and table, then B […]
Explore MoreFriction related concepts: 1. A car of mass m is moving with speed u and brake is applied so that it travels distance s before stop. Find frictional force and coefficient of friction between the wheel and the road. Using the equation v2 = u2 + 2as we get, 0 = u2 – 2as or, […]
Explore MoreFriction: Friction is the retarding force which acts tangentially to the contact surface when a body actually moves or tends to move over the surface of another body. Static friction: The force of friction which exactly counter-balance the applied force during the stationary state of a body is called static friction. So static friction is […]
Explore MoreCONCEPT: If initial velocity (u) is antiparallel to the acceleration (a) of the body, then the motion is retarded first and then accelerated. Example: A ball is thrown vertically upwards with initial speed u. The time taken by the ball to travel maximum height is = . If the given time t < , then […]
Explore MoreFRAME OF REFERENCE: The fixed point or place with respect to which the position, velocity, acceleration etc. of another body or an object is measured is known as frame of reference. TYPES OF REFERENCE FRAME: There are three types of coordinate systems to represent the reference frame. 1. Cartesian coordinate system, 2. Cylindrical coordinate system, […]
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