This page contains Vector questions for B.Sc. first year mechanics. You can also practice these questions if you are appearing for any after B.Sc. entrance exams(ex. IIT JAM) for pursuing M.Sc. Question 1 Define direction cosines of a vector. If $l_1$, $m_1$, $n_1$ and $l_2$, $m_2$, $n_2$ are the direction cosines of two vectors show …
The motion of different bodies can be conveniently described if we imagine co-ordinate system attached to a rigid body and the positions of different bodies in space can be described w.r.t. it, then such co-ordinate system is called frame of reference.
This lesson is about External and internal forces (Dynamics of system of particles) . This chapter comes under subject Mechanics and is for B.Sc. Physics students. While studying Newton’s laws of motion most of the time we have considered objects (for example planets, projectiles etc..) to be point particles rather then extended bodies. We did …
External and internal forces (Dynamics of system of particles) Read More »
This article covers topics like Law of conservation of energy, Equation of motion and Form of motion under the effect of central forces.
From equation 4 we consider \[f(r) = – \frac{{du(r)}}{{dr}}\] then this shows that \(f(r)\) is not only a central force but a conservative force. In this condition this equation
This article covers an introduction to central forces , equation of motion under central forces and
If the force \(\mathop f\limits^ \to \) acting on a body has following characteristics then it is a central force (i) it depends on the distance between two particles (ii) it is always directed towards or away from a fixed point. Gravitational force is an example of central forces. Mathematically if we consider central point as origin
