Arihant Physics by D.C Pandey

An object of mass m is allowed to fall from rest along a rough inclined plane. The speed of the object on reaching the bottom of the plane is proportional to: An object of mass m is allowed to fall from rest along a rough inclined plane. The speed of the object on reaching the [...]

A block of mass m is pulled by a constant power P placed on a rough horizontal plane. The friction coefficient between the block and surface is μ. Find the maximum velocity of the block. A block of mass m is pulled by a constant power P placed on a rough horizontal plane. The friction [...]

The force required to stretch a spring varies with the distance a shown in the figure. If the experiment is performed with the above spring of half length, the line OA will The force required to stretch a spring varies with the distance a shown in the figure. If the experiment is performed with the [...]

The displacement of a body of mass 2kg veries with time t as S=t^2+2t, where S is in seconds. The work done by all the forces acting on the body during the time interval t=2s to t=4s is The displacement of a body of mass 2kg veries with time t as S=t^2+2t where S is [...]

A 15gm ball is shot from a spring whose spring has a force constant of 600N/m. The spring is compressed by 5cm. The greater possible horizontal range of the ball for this compression is A 15gm ball is shot from a spring whose spring has a force constant of 600N/m. The spring is compressed by [...]

v-t graph of an object of mass 1 kg is shown. Select the wrong statement- v-t graph of an object of mass 1 kg is shown. Select the wrong statement- October 19, 2020 Category: Arihant Physics by D.C Pandey , Chapter 6 - Work, Energy and Power , Volume 2 ,

A rope of length `l` and mass ‘m’ is connected to a chain of length `l` and mass `2 m` and hung vertically as shown. What is the change in gravitational potential energy if the system is inverted and hung from same point. F=2x^2−3x−2 . Choose correct option. October 19, 2020 Category: Arihant Physics by [...]

From the fixed pulley, masses 2kg, 1kg and 3kg are suspended as shown in the figure. Find the extension in the spring if k=100 N/m. (Neglect oscillations due to spring) 1kg and 3kg are suspended as shown in the figure. Find the extension in the spring if k=100 N/m. (Neglect oscillations due to spring) From [...]

A block of mass m tied to a string is lowered by a distance d, at a constant acceleration of g/3. The work done by the string is A block of mass m tied to a string is lowered by a distance d at a constant acceleration of g/3. The work done by the string [...]

A block of mass m is hung vertically from an elastic thread of force constant mg/a. Initially the thread was at its natural length and the block is allowed to fall freely. Kinetic energy of the block when it passes through the equilibrium position will be A block of mass m is suspended by a [...]