Physics

When an object is shot from the bottom of a long smooth inclined plane kept at an angle 60∘ with horizontal, it can travel a distance x1​ along the plane. But when the inclination is decreased to 30 degree and the same object is shot with the same velocity, it can travel x2​ distance. Then [...]

A spring of force constant k is cut into lengths of ratio 1:2:3. They are connected in series and the new force constant is k′. If they are connected in parallel and force constant is k′′. Then k′:k′′ is: The mass of lift is 2000 kg. When the tension in the supporting cable is 28000 [...]

A block of mass m is placed on a smooth inclined wedge ABC of inclination θ as shown in the figure. The wedge is given an acceleration ‘a’ towards the right. The relation between a and θ for the block to remain stationary on the wedge is? The mass of lift is 2000 kg. When [...]

The mass of lift is 2000 kg. When the tension in the supporting cable is 28000 N, then its acceleration is: The mass of lift is 2000 kg. When the tension in the supporting cable is 28000 N then its acceleration is: August 28, 2020 Category: Chapter 5 - NLM , NEET Last 32 Years [...]

A force F = αi^ + 3j^ ​+ 6k^ is acting at a point r = 2i^− 6j −12k^. The value of α for which angular momentum about origin is conserved is A force F = αi^+3j^​+6k^ is acting at a point r = 2i^−6j−12k^. The value of α for which angular momentum about origin [...]

A block A of mass m1​ rests on a horizontal table. A light string connected to it passes over a frictionless pulley at the edge of table and from its other end another block B of mass m2​ is suspended. The coefficient of kinetic friction between the block and the table is μk​. When the [...]

Two blocks A and B of masses 3 m and m respectively are connected by a massless and inextensible string. The whole system is suspended by a massless spring as shown in figure. The magnitudes of acceleration of A and B immediately after the string is cut, are respectively : The force 'F' acting on [...]

A bomb of mass 30 kg at rest explodes into two pieces of masses 18 kg and 12 kg. The velocity of 18 kg mass is 6 ms^−1. The kinetic energy of the other mass is : A bomb of mass 30 kg at rest explodes into two pieces of masses 18 kg and 12 [...]

An explosion breaks a rock into three parts in a horizontal plane. Two of them go off at right angles to each other . The first part of mass 1kg moves with a speed of 12m/s^-1 and the second part of mass 2kg moves with 8m/s^-1. If the third part flies off with a velocity [...]

Two sphere A and B of masses m1​ and m2​ respectively collide. A is at rest initially and B is moving with velocity v along x-axis. After collision B has a velocity v/2​ in a direction perpendicular to the original direction. The mass A moves after collision in the direction. A bullet of mass 10g [...]