Friction Acting on Multiple Surfaces 1. If Force Applied on Lower Block: The maximum friction acting on m₂ is f₂ = µ₂m₂g. If the system moves with the common acceleration, then F – µ₁ (m₁ + m₂) g = (m₁ + m₂) a and f₂ = m₂a Maximum acceleration of m₂, µ₂m₂g = m₂ amax Read more about Friction Acting on Multiple Surfaces[…]
Angle of Repose (Or) Angle of Sliding The angle of repose or angle of sliding is defined as the minimum angle of inclination of a plane with the horizontal such that a body placed on the plane just begins to slide down. Its value depends on the material and nature of the surfaces in contact. Read more about Angle of Repose (Or) Angle of Sliding[…]
Time of Flight Let a particle is projected with velocity u at angle θ with the horizontal. We can write the x and y components of the initial velocity as ux = u cosθ, uy = u sinθ. The acceleration of the particle in x and y direction is ax = 0 and ay = Read more about Time of Flight[…]
Different Cases in Acceleration – Time Graph Acceleration is the rate at which the velocity changes with respect to time. It is measured in m/ sec² in standard unit system. To obtain acceleration vs. time graph we plot acceleration on y-axis and time on x-axis. There are three possible cases that we arrive on: 1. Read more about Different Cases in Acceleration – Time Graph[…]
Acceleration – Time Graph of Various Types of Motions of a Particle Let the acceleration be given as the function of time, i.e. a = f (t). Then the elementary change in velocity during a time dt is . We can observe that in a – t graph, is equal to the area of the Read more about Acceleration – Time Graph of Various Types of Motions of a Particle[…]
Derivations of Equations of Motions by Calculus Method Let a particle start moving with velocity u at time t = 0 along a straight line. The particle has a constant acceleration a. Let at t = t, its velocity becomes v and it covers a displacement of s during this time. v = ∫adt + Read more about Derivations of Equations of Motions by Calculus Method[…]
Tensile Stress When an external force is applied to a body then at each cross section of the body an internal restoring force is setup which tends to restore the body to its original state. The restoring setup inside the body per unit area is known as stress. The normal stresses can be either tensile Read more about Tensile Stress[…]
Compressive Stress When an external force is applied to a body then at each cross section of the body an internal restoring force is setup which tends to restore the body to its original state. The restoring setup inside the body per unit area is known as stress. The normal stresses can be either tensile Read more about Compressive Stress[…]
Electric Flux Electric field lines used to describe the basic nature of the electric field in two dimensional forms. What if we want to describe electric field in a three-dimensional form, this can be done with the help of electric flux. It is the measure of flow of the electric field through a given area. Read more about Electric Flux[…]
Displacement Current In electromagnetism, the displacement current is a quantity appearing in Maxwell’s equations that is defined in terms of the rate of change of electric displacement field. Displacement current has the units of electric current density and it has an associated magnetic field. However, it is not an electric current of moving charges, but Read more about Displacement Current[…]