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A particle is projected with a certain velocity at an angle alpha above the horizontal from the foot of an inclined plane of inclination 30. If the particle strikes the plane normally, then alpha is equal to
24
Sep
A particle is projected with a certain velocity at an angle alpha above the horizontal from the foot of an inclined plane of inclination 30. If the particle strikes the plane normally, then alpha is equal to A particle is projected with a certain velocity at an angle alpha above the horizontal from the foot [...]
Two blocks A and B of masses m and 2m respectively are placed on a smooth floor. They are connected by a spring. A third block C of mass m moves with a velocity v0 along the line joing A and B and collides elastically with A, as shown in figure. At a certain instant of time t0 after collision, it is found that the instantaneous velocities of A and B are the same.
24
Sep
Two blocks A and B of masses m and 2m respectively are placed on a smooth floor. They are connected by a spring. A third block C of mass m moves with a velocity v0 along the line joing A and B and collides elastically with A, as shown in figure. At a certain instant [...]
The horizontal range and maximum height attained by a projectile are R and H, respectively. If a constant horizontal acceleration a = g/4 is imparted to the projectile due to wind, then its horizontal
24
Sep
The horizontal range and maximum height attained by a projectile are R and H, respectively. If a constant horizontal acceleration a = g/4 is imparted to the projectile due to wind, then its horizontal respectively. If a constant horizontal acceleration a = g/4 is imparted to the projectile due to wind The horizontal range and [...]
In the figure, the block B of mass m starts from rest at the top of a wedge W of mass M. All surfaces are without friction. W can slide on the ground. B slides down onto the ground, moves along it with a speed v, has an elastic collision with the wall, and climbs back on to W.
24
Sep
In the figure, the block B of mass m starts from rest at the top of a wedge W of mass M. All surfaces are without friction. W can slide on the ground. B slides down onto the ground, moves along it with a speed v, has an elastic collision with the wall, and climbs [...]
A body of mass m is projected horizontally with a velocity v from the top of a tower of height h and it reaches the ground at a distance x from the foot of the tower. If a second body of mass 2 m is
24
Sep
A body of mass m is projected horizontally with a velocity v from the top of a tower of height h and it reaches the ground at a distance x from the foot of the tower. If a second body of mass 2 m is A body of mass m is projected horizontally with a [...]
A car is moving horizontally along a straight line with a uniform velocity of 25 m/s. A projectile is to be fired from this car in such a way that it will return to it after it has moved 100 m. The speed
24
Sep
A car is moving horizontally along a straight line with a uniform velocity of 25 m/s. A projectile is to be fired from this car in such a way that it will return to it after it has moved 100 m. The speed A projectile is given an initial velocity of i + 2j. The [...]
Two balls A and B are thrown with speed u and u/2, respectively. Both the balls cover the same horizontal distance before returning to the plane of projection. If the angle of projection of ball
24
Sep
Two balls A and B are thrown with speed u and u/2, respectively. Both the balls cover the same horizontal distance before returning to the plane of projection. If the angle of projection of ball respectively. Both the balls cover the same horizontal distance before returning to the plane of projection. If the angle of [...]
A string of length 3 l is connected to a fixed cylinder whose top view is shown in Fig. The string is initially slack. The other end of the string (connected to a marble) is moving at a constant velocity of 10m/s as shown. The string will get stretched at some instant and impulsive tension occurs in the string. If hinge is exerting a force of 40000N for 0.25ms on the cylinder to bear up the impact of impulsive tension, then mark the correct statements. (Take string to be light, breaking tension of the string is 2 x 10^5 N)
24
Sep
A string of length 3 l is connected to a fixed cylinder whose top view is shown in Fig. The string is initially slack. The other end of the string (connected to a marble) is moving at a constant velocity of 10m/s as shown. The string will get stretched at some instant and impulsive tension [...]
A particle is projected from the ground with an initial speed of v at an angle theta with horizontal. The average velocity of the particle between its point of projection and highest point
24
Sep
A particle is projected from the ground with an initial speed of v at an angle theta with horizontal. The average velocity of the particle between its point of projection and highest point A particle is projected from the ground with an initial speed of v at an angle theta with horizontal. The average velocity [...]
A ball of mass 1 kg is dropped from a height of 3.2 m on smooth inclined plane. The coefficient of restitution for the collision is e = 1/2. The ball’s velocity become horizontal after the collision.
24
Sep
A ball of mass 1 kg is dropped from a height of 3.2 m on smooth inclined plane. The coefficient of restitution for the collision is e = 1/2. The ball’s velocity become horizontal after the collision. A ball of mass 1 kg is dropped from a height of 3.2 m on smooth inclined plane. [...]