A rod is balanced vertically on one of its ends. Which one among the following is the correct nature of its state of equilibrium?
Unstable equilibrium
A rod balanced vertically on one end is analogous to an inverted pendulum: any small displacement moves its centre of gravity further away from the balance point, increasing the disturbing torque instead of restoring it. This makes the equilibrium unstable, since the slightest disturbance causes the rod to topple rather than return to its original position.
The Hooke's law is valid for _________.
Two identical solid pieces, one of gold and other of silver, when immersed completely in water exhibit equal weights. When weighted in air (given that density of gold is greater than that of silver)
Two parallel, but not necessarily unidirectional, forces of magnitude 1 N and 2 N are acting on a body. Two more, parallel, again not necessarily unidirectional, forces of magnitude 3 N and 1 N, but perpendicular to the earlier forces, are applied to the body. Which one among the following are the smallest and largest possible magnitudes of the resultant force on the body?
Which of the following physical quantity is responsible for opening the lid of a bottle?
The use of lubricants makes the surface-
If a box of mass 25 kg is pushed 15 m by a force of ‘F’ N and work done in the process is 480 J. Find F:
If an object moves in a circular path with uniform ________, its motion is called uniform circular motion