Cengage NEET by C.P Singh
A string of length L is fixed at one end and carries a mass M at the other end. The string makes 2/π revolution per second around the vertical axis through the fixed end as shown in the figure, then tension in the string is.
22
Oct
A string of length L is fixed at one end and carries a mass M at the other end. The string makes 2/π revolution per second around the vertical axis through the fixed end as shown in the figure, then tension in the string is. A string of length L is fixed at one end [...]
A ball of mass m1 makes an elastic , one-dimensional collision with a stationary particle of mass m2. The fraction of the kinetic energy of m1 transferred to m2 is
22
Oct
A ball of mass m1 makes an elastic , one-dimensional collision with a stationary particle of mass m2. The fraction of the kinetic energy of m1 transferred to m2 is A ball of mass m1 makes an elastic one-dimensional collision with a stationary particle of mass m2. The fraction of the kinetic energy of m1 [...]
A neutron collides head-on and elasticity with an atom of mass number A, which is initially at rest. The fraction of kinetic energy retained by neutron is
22
Oct
A neutron collides head-on and elasticity with an atom of mass number A, which is initially at rest. The fraction of kinetic energy retained by neutron is A neutron collides head-on and elasticity with an atom of mass number A which is initially at rest. The fraction of kinetic energy retained by neutron is October [...]
A steel ball of radius 2cm is at rest on a frictionless surface. Another ball of radius 4cm moving at a velocity of 81cm/see collides elastically with first ball. After collision the smaller ball moves with speed of
22
Oct
A steel ball of radius 2cm is at rest on a frictionless surface. Another ball of radius 4cm moving at a velocity of 81cm/see collides elastically with first ball. After collision the smaller ball moves with speed of A body of mass m1 moving with a velocity 3m/s collides with another body at rest of [...]
A body of mass 2kg makes an elastic head – on collision another body at rest and continues to move in the original direction with one fourth of its original speed . The mass of the second body which collides with the first body is
22
Oct
A body of mass 2kg makes an elastic head – on collision another body at rest and continues to move in the original direction with one fourth of its original speed . The mass of the second body which collides with the first body is A bomb explodes in air when it has a horizontal [...]
A body of mass m1 moving with a velocity 3m/s collides with another body at rest of m2 . After collision the velocities of the two bodies are 2m/s and 5m/s , respectively , along the direction of motion of m1. The ratio m1/m2 is
22
Oct
A body of mass m1 moving with a velocity 3m/s collides with another body at rest of m2 . After collision the velocities of the two bodies are 2m/s and 5m/s , respectively , along the direction of motion of m1. The ratio m1/m2 is A body of mass m1 moving with a velocity 3m/s [...]
A cannon shell is fired to hit a target at a horizontal distance d. However , it breaks into two parts of mass ratio 1:2 at its height point. The smaller part returns to cannon. The other part (i) will fall at a distance d/2 beyond the target (ii) have eight times the kinetic energy of smaller part (iii) the increase in kinetic energy of system after explosion is 200% (iv) after explosion , heavier part will take more time as compared to smaller part , to strike the ground
22
Oct
A cannon shell is fired to hit a target at a horizontal distance d. However , it breaks into two parts of mass ratio 1:2 at its height point. The smaller part returns to cannon. The other part (i) will fall at a distance d/2 beyond the target (ii) have eight times the kinetic energy [...]
A ball is released from height 80m. When the ball is at height 60m, it explodes in two parts of mass ratio 1:2. One of them moves horizontally with speed 20m/s. The distance between the two pieces on the ground is
22
Oct
A ball is released from height 80m. When the ball is at height 60m, it explodes in two parts of mass ratio 1:2. One of them moves horizontally with speed 20m/s. The distance between the two pieces on the ground is A ball is released from height 80m. When the ball is at height 60m [...]
A bomb of mass 4m, while moving on a parabolic path, explodes at highest point of its path. If breaks into two parts of mass ratio 1:3, smaller part coming to rest. The range of this projectile was 60m in the absence of explosion. The distance of the second part from the point of projection when it strikes the ground is
22
Oct
A bomb of mass 4m, while moving on a parabolic path, explodes at highest point of its path. If breaks into two parts of mass ratio 1:3, smaller part coming to rest. The range of this projectile was 60m in the absence of explosion. The distance of the second part from the point of projection [...]
Tags:
A bomb of mass 4m ,
explodes at highest point of its path. If breaks into two parts of mass ratio 1:3 ,
smaller part coming to rest. The range of this projectile was 60m in the absence of explosion. The distance of the second part from the point of projection when it strikes the ground is ,
while moving on a parabolic path ,
A shell is fired from a cannon with a velocity 20m/s at an angle 60^∘ with the horizontal. At the highest point it explodes into three pieces of equal masses . One of the pieces retraces its path to the cannon , the second piece moves vertically up with speed 40m/s , the third piece will move with velocity (immediately after the explosion) 1. 20m/s in a horizontal direction 2. 40m/s at an angle 45^∘ with horizontal in an upward direction 3. 402–√m/s at an angle 45^∘ with horizontal in an upward direction 4. 402–√m/s at an angle 45^∘ with horizontal in the downward direction
22
Oct
A shell is fired from a cannon with a velocity 20m/s at an angle 60^∘ with the horizontal. At the highest point it explodes into three pieces of equal masses . One of the pieces retraces its path to the cannon , the second piece moves vertically up with speed 40m/s , the third piece [...]