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If ar and at represent radial and tangential accelerations, the motion of a particle will be uniformly circular if 1. ar=0 and at=0 2. ar=0 but at≠0 3. ar≠0 but at=0 4. ar≠0 but at≠0
22
Oct
If ar and at represent radial and tangential accelerations, the motion of a particle will be uniformly circular if 1. ar=0 and at=0 2. ar=0 but at≠0 3. ar≠0 but at=0 4. ar≠0 but at≠0 If ar and at represent radial and tangential accelerations the motion of a particle will be uniformly circular if 1. [...]
A particle A of mass m is attached to a vertical axis by two stings PA and QA of lengths 3L and 4L , respectively. PQ=5L. A rotates around the axis with an angular speed ω. The tension in the two strings are T1 and T2.
22
Oct
A particle A of mass m is attached to a vertical axis by two stings PA and QA of lengths 3L and 4L , respectively. PQ=5L. A rotates around the axis with an angular speed ω. The tension in the two strings are T1 and T2. A particle A of mass m is attached to [...]
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 [...]