Physics-
General
Easy
Question
A small block of mass m is placed on a wedge of mass M as shown, which is initially at rest. All the surfaces are frictionless . The spring attached to the other end of wedge has force constant k. If a' is the acceleration of m relative to the wedge as it starts coming down and A is the acceleration acquired by the wedge as the block starts coming down, then
2 < A < a ' '/>
2 '/>
- '/>
- None
The correct answer is:
Related Questions to study
Physics-
A thin rod of mass M and length L is struck at one end by a ball of clay of mass m, moving with speed v as shown in figure. The ball sticks to the rod. After the collision, the angular momentum of the clay-rod system about A, the midpoint of the rod, is
A thin rod of mass M and length L is struck at one end by a ball of clay of mass m, moving with speed v as shown in figure. The ball sticks to the rod. After the collision, the angular momentum of the clay-rod system about A, the midpoint of the rod, is
Physics-General
Physics-
One ice skater of mass m moves with speed 2v to the right, while another of the same mass m moves with speed v toward the left, as shown in figure I. Their paths are separated by a distance b. At t = 0, when they are both at x = 0, they grasp a pole of length b and negligible mass. For t > 0, consider the system as a rigid body of two masses m separated by distance b, as shown in figure II. Which of the following is the correct formula for the motion after t = 0 of the skater initially at y = b/2?
One ice skater of mass m moves with speed 2v to the right, while another of the same mass m moves with speed v toward the left, as shown in figure I. Their paths are separated by a distance b. At t = 0, when they are both at x = 0, they grasp a pole of length b and negligible mass. For t > 0, consider the system as a rigid body of two masses m separated by distance b, as shown in figure II. Which of the following is the correct formula for the motion after t = 0 of the skater initially at y = b/2?
Physics-General
Physics-
Two light vertical springs with equal natural lengths and spring constants k1 and k2 are separated by a distance l. Their upper ends are fixed to the ceiling and their lower ends to the ends A and B of a light horizontal rod AB. A vertical downwards force F is applied at point C on the rod. AB will remain horizontal in equilibrium if the distance AC is
Two light vertical springs with equal natural lengths and spring constants k1 and k2 are separated by a distance l. Their upper ends are fixed to the ceiling and their lower ends to the ends A and B of a light horizontal rod AB. A vertical downwards force F is applied at point C on the rod. AB will remain horizontal in equilibrium if the distance AC is
Physics-General
Physics-
A conical pendulum consists of a mass M suspended from a string of length l. The mass executes a circle of radius R in a horizontal plane with speed v. At time t, the mass is at position i and has velocity . At time t, the angular momentum vector of the mass M about the point from which the string suspended is :
A conical pendulum consists of a mass M suspended from a string of length l. The mass executes a circle of radius R in a horizontal plane with speed v. At time t, the mass is at position i and has velocity . At time t, the angular momentum vector of the mass M about the point from which the string suspended is :
Physics-General
Physics-
In the previous problem, the steel rope is vertical and moving with the force acting vertically up at the upper end. The strain at a point L/3 from lower end is
In the previous problem, the steel rope is vertical and moving with the force acting vertically up at the upper end. The strain at a point L/3 from lower end is
Physics-General
Physics-
In the figure shown a long cart moves on a smooth horizontal surface due to an external constant force of magnitude F. Initial mass of the cart is M0 and velocity is zero. At t = 0 sand starts falling kg/s and sticksmfrom a stationary hopper on to the cart with negligible velocity at constant rate to the cart.
In the above question the rate of increase of the kinetic energy of the cart (with sand) is v
In the figure shown a long cart moves on a smooth horizontal surface due to an external constant force of magnitude F. Initial mass of the cart is M0 and velocity is zero. At t = 0 sand starts falling kg/s and sticksmfrom a stationary hopper on to the cart with negligible velocity at constant rate to the cart.
In the above question the rate of increase of the kinetic energy of the cart (with sand) is v
Physics-General
Physics-
In the figure shown a long cart moves on a smooth horizontal surface due to an external constant force of magnitude F. Initial mass of the cart is M0 and velocity is zero. At t = 0 sand starts falling kg/s and sticksmfrom a stationary hopper on to the cart with negligible velocity at constant rate to the cart.
In the same model of the above question if the cart is to be moved with constant velocity v, then the power supplied by external agent applying that force is v v
In the figure shown a long cart moves on a smooth horizontal surface due to an external constant force of magnitude F. Initial mass of the cart is M0 and velocity is zero. At t = 0 sand starts falling kg/s and sticksmfrom a stationary hopper on to the cart with negligible velocity at constant rate to the cart.
In the same model of the above question if the cart is to be moved with constant velocity v, then the power supplied by external agent applying that force is v v
Physics-General
Physics-
In the figure shown a long cart moves on a smooth horizontal surface due to an external constant force of magnitude F. Initial mass of the cart is M0 and velocity is zero. At t = 0 sand starts falling kg/s and sticksmfrom a stationary hopper on to the cart with negligible velocity at constant rate to the cart.
The velocity of the cart at time
In the figure shown a long cart moves on a smooth horizontal surface due to an external constant force of magnitude F. Initial mass of the cart is M0 and velocity is zero. At t = 0 sand starts falling kg/s and sticksmfrom a stationary hopper on to the cart with negligible velocity at constant rate to the cart.
The velocity of the cart at time
Physics-General
Physics-
Two bodies have undergone an elastic one–dimensional collision along x–axis. Figure is a graph of position versus time for these bodies and for their center of mass.
The mass of the body that was moving faster before the collision is ________ that of other body.
Two bodies have undergone an elastic one–dimensional collision along x–axis. Figure is a graph of position versus time for these bodies and for their center of mass.
The mass of the body that was moving faster before the collision is ________ that of other body.
Physics-General
Physics-
Two bodies have undergone an elastic one–dimensional collision along x–axis. Figure is a graph of position versus time for these bodies and for their center of mass.
Which line segment corresponds to the motion of the center of mass before and after the collision?
Two bodies have undergone an elastic one–dimensional collision along x–axis. Figure is a graph of position versus time for these bodies and for their center of mass.
Which line segment corresponds to the motion of the center of mass before and after the collision?
Physics-General
Physics-
A bob of mass 10 M is suspended through an inextensible string of length l. When the bob is at rest at the equilibrium position, two particles of mass m each moving with velocity u making an angle 60° with the string strike and get simultaneously attached to the bob. What is the value of impulsive tension (l) in the string during the impact ?
A bob of mass 10 M is suspended through an inextensible string of length l. When the bob is at rest at the equilibrium position, two particles of mass m each moving with velocity u making an angle 60° with the string strike and get simultaneously attached to the bob. What is the value of impulsive tension (l) in the string during the impact ?
Physics-General
Physics-
A small ball is dropped from a height h onto a rigid frictionless plate at B and rebounds. Find the maximum height reached after rebound if the coefficient of restitution between the ball and the plate is e = 0.75:
A small ball is dropped from a height h onto a rigid frictionless plate at B and rebounds. Find the maximum height reached after rebound if the coefficient of restitution between the ball and the plate is e = 0.75:
Physics-General
Physics-
Two blocks A & B are connected by a spring of stiffness 512 N/m and placed on a smooth horizontal surface. Initially the spring has its equilibrium length. The indicated velocities are imparted to A & B. The maximum extension of the spring will be
Two blocks A & B are connected by a spring of stiffness 512 N/m and placed on a smooth horizontal surface. Initially the spring has its equilibrium length. The indicated velocities are imparted to A & B. The maximum extension of the spring will be
Physics-General
Physics-
An potential energy curve U(x) is shown in the figure. What value must the mechanical energy Emec of the particle not exceed, if the particle is to be trapped within the region shown in graph?
An potential energy curve U(x) is shown in the figure. What value must the mechanical energy Emec of the particle not exceed, if the particle is to be trapped within the region shown in graph?
Physics-General
Physics-
A spring that lies along X axis is attached to a wall at end and block at the other end. The block rests on a frictionless surface at X = 0 then an applied horizontal force F of constant magnitude begins to compress the spring, displacing the block by distance X, untill the block comes to maximum displacement Xmax. Which of the curves in figure best represent.
The work done on the spring block system by the applied force
A spring that lies along X axis is attached to a wall at end and block at the other end. The block rests on a frictionless surface at X = 0 then an applied horizontal force F of constant magnitude begins to compress the spring, displacing the block by distance X, untill the block comes to maximum displacement Xmax. Which of the curves in figure best represent.
The work done on the spring block system by the applied force
Physics-General