Question Answers
Sahay Sir > Question Answers
A body of mass 1 kg begins to move under the action of a time dependent force F = (2t i^ – 3t^2j^) N, where i^ and j^ are unit vectors along x and y axis. What power will be developed by the force at the time (t)?
28
Aug
A body of mass 1 kg begins to move under the action of a time dependent force F = (2t i^ – 3t^2j^) N, where i^ and j^ are unit vectors along x and y axis. What power will be developed by the force at the time (t)? A body of mass 1 kg begins [...]
The potential energy of a system increases, if work is done
28
Aug
The potential energy of a system increases, if work is done if work is done The potential energy of a system increases August 28, 2020 Category: Chapter 7 - Work, Energy and Power , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , Physics ,
A body has maximum range R 1 when projected up the plane. The same body when projected down the inclined plane, it has maximum range R 2 . Find the maximum horizontal range. Assume equal speed of projection in each case and the body is projected onto the inclined plane in the line of the greatest slope.
28
Aug
A body has maximum range R 1 when projected up the plane. The same body when projected down the inclined plane, it has maximum range R 2 . Find the maximum horizontal range. Assume equal speed of projection in each case and the body is projected onto the inclined plane in the line [...]
Tags:
A body has maximum range R 1 when projected up the plane. The same body when projected down the inclined plane ,
it has maximum range R 2 . Find the maximum horizontal range. Assume equal speed of projection in each case and the body is projected onto the inclined plane in the line of the greatest slope. ,
The potential energy of a particle in a force field is: U =A/r^2 − B/r where A and B are positive constants and r is the distance of particle from the centre of field. For stable equilibrium, the distance of the particle is :
28
Aug
The potential energy of a particle in a force field is: U =A/r^2 − B/r where A and B are positive constants and r is the distance of particle from the centre of field. For stable equilibrium, the distance of the particle is : the distance of the particle is : The potential energy of [...]
A body of mass m is taken from earth’s surface to the height equal to twice the radius of earth, the change in potential energy of body will be
28
Aug
A body of mass m is taken from earth’s surface to the height equal to twice the radius of earth, the change in potential energy of body will be A body of mass m is taken from earth's surface to the height equal to twice the radius of earth the change in potential energy of [...]
A body has maximum range R 1 when projected up the plane. The same body when projected down the inclined plane, it has maximum range R 2 . Find the maximum horizontal range. Assume equal speed of projection in each case and the body is projected onto the inclined plane in the line of the greatest slope.
28
Aug
A body has maximum range R 1 when projected up the plane. The same body when projected down the inclined plane, it has maximum range R 2 . Find the maximum horizontal range. Assume equal speed of projection in each case and the body is projected onto the inclined plane in the line of [...]
Tags:
A body has maximum range R 1 when projected up the plane. The same body when projected down the inclined plane ,
it has maximum range R 2 . Find the maximum horizontal range. Assume equal speed of projection in each case and the body is projected onto the inclined plane in the line of the greatest slope. ,
A shell of mass 200 g is ejected from a gun of mass 4 kg by an explosion that generates 1.05 kJ of energy. The velocity of the shell is
28
Aug
A shell of mass 200 g is ejected from a gun of mass 4 kg by an explosion that generates 1.05 kJ of energy. The velocity of the shell is A shell of mass 200 g is ejected from a gun of mass 4 kg by an explosion that generates 1.05 kJ of energy. The [...]
An inclined plane is angle at theta 30 with the horizontal. A particle is projected from this plane with a speed of 5ms^-1 at an angle of elevation beta=30 degree with the horizontal
28
Aug
An inclined plane is angle at theta 30 with the horizontal. A particle is projected from this plane with a speed of 5ms^-1 at an angle of elevation beta=30 degree with the horizontal An inclined plane is angle at theta 30 with the horizontal. A particle is projected from this plane with a speed of [...]
A block of mass 10 kg is in contact against the inner wall of a hollow cylindrical drum of radius 1 m. The coefficient of friction between the block and the inner wall of the cylinder is 0.1. The minimum angular velocity needed for the cylinder to keep the block stationary when the cylinder is vertical and rotating about its axis, will be : (g=10m/s^2)
28
Aug
A block of mass 10 kg is in contact against the inner wall of a hollow cylindrical drum of radius 1 m. The coefficient of friction between the block and the inner wall of the cylinder is 0.1. The minimum angular velocity needed for the cylinder to keep the block stationary when the cylinder is [...]
Posted in:
Chapter 6 - Friction
,
NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions
,
Physics
,
Tags:
A plank with a box on it at one end is gradually raised about the other end. As the angle of inclination with the horizontal reaches 30 ,
respectively ,
the box starts to slip and slides 4.0 m down the plank in 4.0 s. The coefficients of static and kinetic friction between the box and the plank will be ,
Which one of the following statements is incorrect ?
28
Aug
Which one of the following statements is incorrect ? Which one of the following statements is incorrect ? August 28, 2020 Category: Chapter 6 - Friction , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , Physics ,