Question of the day for NEET 2023 : 20-12-22
Three point charge -q, +q and -q are placed along a straight line at equl distances( say r meter) Electric potential energy of this system of charges will be if +q charge is in the middle- Solution:
Question of the day 17-12-22
There are 27 cells with an internal resistance 0.4 ohms and an external resistance 1.2 ohms. What is the most effective way of grouping them? (a)All the cells are in series (b) All the cells are in parallel (C) 9 parallel branches with 3 cells in each branch (d) 3 parallel branches with 9 cells …
Question of the day 27-11-2022
Two men P & Q are standing at corners A & C of a regular hexagon ABCDEF of side 7 m. They start moving along the track with constant speeds 2 m/s and 5.5 m/s respectively. The time when they will meet for the first time, is equal to :
Projectile Motion
Projectile Motion (Short Notes)
Motion Under Gravity
The most important example of motion in a straight line with constant acceleration is motion under gravity.
The acceleration due to gravity can be considered constant (g = 9.8 m/s2) if the height of the body above ground is very small in comparison to the radius of earth. As radius of earth is 6400km, in most of the cases in kinematics value of acceleration of gravity is taken constant.
Uniformly accelerated motion in Straight Line
UNIFORLY ACCELERATED MOTION IN STRAIGHT LINE When a perticle moves in straight line with constant acceleration, the following kinematic equations of motion can be used. (i) v = u + at or v = v0 + at (ii) S = ut + (1/2) at2 or …
Use of Calculus in Motion in Straight Line
Calculus (differentiation and integration) is widely used in solving complex problem of kinematics. Here we have used calculus for motion in straight line with uniform and non-uniform acceleration.
Win over Frustration and Depression
Nowadays, the word depression or frustration has become very common for us, right? Especially for students! Let us try to figure out the root cause of these.