Classical Mechanics-Particle Dynamics [IAS (Admin.) Mains Physics]: Questions 1 - 4 of 44
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Question 1
Appeared in Year: 2011 (IFS)
Write in Short Short Answer▾
A particle of rest mass ‘M’ moving at a velocity ‘u’ collides with a stationary particle of rest mass ‘m’ . If the particle stick together, show that the speed of the composite ball is equal to,
Where (Paper-1) (Section – A)
EditQuestion 2
Appeared in Year: 2013 (IFS)
Write in Short Short Answer▾
A satellite revolves in a circular orbit around the Earth at a certain height above it. Calculate the time period of revolution of the satellite, if the radius of the Earth is significantly higher than the height at which the satellite revolves. (Section A)
EditQuestion 3
Appeared in Year: 2010 (IFS)
Describe in Detail Subjective▾
Establish the relation between the angular momentum and torque of a particle. Show that this relation leads one to the principle of conservation of angular momentum. (Section A)
EditExplanation
- Angular momentum is a measure of body is given by the cross product of linear momentum and position vector from the axis of rotation.
Where, is distance from the axis of rotation and the is the linear momentum of the body.
- Torque …
… (83 more equations) …
Question 4
Appeared in Year: 2016
Describe in Detail Subjective▾
Two weight and are suspended from fixed point by strings and are kept apart by a light rod If the strings and make angles and with rod , show that the angle which the rod makes with the vertical is given by
[CS (Main) Paper 1]
EditExplanation
The rod kept apart the strings and carring weights and respectively, at its ends.
The thrust of the rod at will be equal and opposite to that at in shown in Figure.
Let b…
… (635 more equations, 27 figures) …