Physics
A car of mass 1000 kg negotiates a banked curve of radius 90 m on a frictionless road. If the banking angle is 45, the speed of the car is
28
Aug
A car of mass 1000 kg negotiates a banked curve of radius 90 m on a frictionless road. If the banking angle is 45, the speed of the car is A car of mass 1000 kg negotiates a banked curve of radius 90 m on a frictionless road. If the banking angle is 45 the [...]
A car is negotiating a cruved road of radius R. The raod is banked at an angle tetha. The coefficient of friction between the tyres of the car and the road is Us . the maximum safe velocity on this road is
28
Aug
A car is negotiating a cruved road of radius R. The raod is banked at an angle tetha. The coefficient of friction between the tyres of the car and the road is Us . the maximum safe velocity on this road is Two bodies of masres 1kg and 3kg have position vectors i^+2j^ + k^ [...]
A man of 50 kg mass is standing in a gravity free space at a height of 10 m above the floor. He throws a stone of 0.5 kg mass downwards with a speed 2 m/s. When the stone reaches the floor,the distance of the man above the floor will be
28
Aug
A man of 50 kg mass is standing in a gravity free space at a height of 10 m above the floor. He throws a stone of 0.5 kg mass downwards with a speed 2 m/s. When the stone reaches the floor,the distance of the man above the floor will be A man of 50 [...]
Two particles which are initially at rest, move towards each other under the action of their internal attraction. If their speeds are v and 2v at any instant, then the speed of centre of mass of the system will be
28
Aug
Two particles which are initially at rest, move towards each other under the action of their internal attraction. If their speeds are v and 2v at any instant, then the speed of centre of mass of the system will be move towards each other under the action of their internal attraction. If their speeds are [...]
Two persons of masses 55 kg and 65 kg respectively, are at the opposite ends of the boat. The length of the boat is 3.0 m and weigh 100 kg. The 55 kg man walks to the 65 kg man and sits with him. If the boat is in stil water the centre of mass of the system shifts by
28
Aug
Two persons of masses 55 kg and 65 kg respectively, are at the opposite ends of the boat. The length of the boat is 3.0 m and weigh 100 kg. The 55 kg man walks to the 65 kg man and sits with him. If the boat is in stil water the centre of mass [...]
Two bodies of masres 1 kg and 3 kg have position vectors i^ + 2j^ + k^ and − 3i − 2j^ + k^ respectively. The centre of mass of this system has a position vector
28
Aug
Two bodies of masres 1 kg and 3 kg have position vectors i^ + 2j^ + k^ and − 3i − 2j^ + k^ respectively. The centre of mass of this system has a position vector Two bodies of masres 1kg and 3kg have position vectors i^+2j^ + k^ and − 3i − 2j^ + [...]
On a frictionless surface, a block of mass M moving at speed υ collides elastically with another block of same mass M which is initially at rest. After collision the first block moves at an angle θ to its initial direction and has a speed υ/3. The second block’s speed after the collision is:
28
Aug
On a frictionless surface, a block of mass M moving at speed υ collides elastically with another block of same mass M which is initially at rest. After collision the first block moves at an angle θ to its initial direction and has a speed υ/3. The second block’s speed after the collision is: On [...]
Body A of mass 4m moving with speed u collides with another body B of mass 2m, at rest. The collision is head on and elastic in nature. After the collision the fraction of energy lost by the colliding body A is :
28
Aug
Body A of mass 4m moving with speed u collides with another body B of mass 2m, at rest. The collision is head on and elastic in nature. After the collision the fraction of energy lost by the colliding body A is : at rest. The collision is head on and elastic in nature. After [...]
A moving block having mass m, collides with another stationary block having mass 4m. The lighter block comes to rest after collision. When the initial velocity of the lighter block is v, then the value of coefficient of restitution (e) will be:
28
Aug
A moving block having mass m, collides with another stationary block having mass 4m. The lighter block comes to rest after collision. When the initial velocity of the lighter block is v, then the value of coefficient of restitution (e) will be: A moving block having mass m collides with another stationary block having mass [...]
A ball moving with velocity 2m/s collides head on with another stationary ball of double the mass. If coefficient of restitution is 0.5, then their velocities (in m/s) after collision will be :
28
Aug
A ball moving with velocity 2m/s collides head on with another stationary ball of double the mass. If coefficient of restitution is 0.5, then their velocities (in m/s) after collision will be : A ball moving with velocity 2m/s collides head on with another stationary ball of double the mass. If coefficient of restitution is [...]