Chapter 6 – Work, Energy and Power
Sahay Sir > Question Answers > Arihant Physics by D.C Pandey > Volume 1 > Chapter 6 - Work, Energy and Power
v-t graph of an object of mass 1 kg is shown. Select the wrong statement-
19
Oct
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.
19
Oct
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)
19
Oct
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
19
Oct
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
19
Oct
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 [...]
F=2x^2−3x−2 . Choose correct option.
19
Oct
F=2x^2−3x−2 . Choose correct option. F=2x^2−3x−2 . Choose correct option. October 19, 2020 Category: Arihant Physics by D.C Pandey , Chapter 6 - Work, Energy and Power , Volume 2 ,
The potential energy of the system is represented in the first figure. The force acting on the system will be represented by
19
Oct
The potential energy of the system is represented in the first figure. The force acting on the system will be represented by The potential energy of the system is represented in the first figure. The force acting on the system will be represented by October 19, 2020 Category: Arihant Physics by D.C Pandey , Chapter [...]
A block of mass 250 g is kept on a vertical spring of spring constant 100 N/m fixed from below. The spring is now compressed to have length 10 cm shorter than its natural length and the system is released from this position. How high does the block rise? take g=10ms2^.
19
Oct
A block of mass 250 g is kept on a vertical spring of spring constant 100 N/m fixed from below. The spring is now compressed to have length 10 cm shorter than its natural length and the system is released from this position. How high does the block rise? take g=10ms2^. A block of mass [...]
A block of mass 50 kg is projected horizontal on a rough horizontal floor. The coefficient of friction between the block and the floor is 0.1. The block strikes a light spring of stiffness k=100 N/m with a velocity 2m/s, the maximum compression of the spring is
19
Oct
A block of mass 50 kg is projected horizontal on a rough horizontal floor. The coefficient of friction between the block and the floor is 0.1. The block strikes a light spring of stiffness k=100 N/m with a velocity 2m/s, the maximum compression of the spring is A block of mass m is suspended by [...]
Force acting on a block moving along x-axis is given by F=−(4x^2+2)N The block is displaced from x=−2m to x=+4m, the work done will be
19
Oct
Force acting on a block moving along x-axis is given by F=−(4x^2+2)N The block is displaced from x=−2m to x=+4m, the work done will be Force acting on a block moving along x-axis is given by F=−(4x^2+2)N The block is displaced from x=−2m to x=+4m the work done will be............ October 19, 2020 Category: Arihant [...]