Physics Test 86

Two points of a rod move with velocities 3v and v perpendicular to the rod and in the same direction separated by a distance 'r'. Then the angular velocity of the rod is :

A rigid rod has a weight 20 N uniformly distributed over its length 1m is placed horizontally on two rigid support at its ends. A weigh 10 N is hung at a distance 30 cm from one end. Then find reaction at the other end :

A ring starts from rest and acquires an angular speed of 10 rad/s in 2 s. The mass of the ring is 500 gm and its radius is 20 cm, the torque on the ring is :

A body of mass m and radius r is released from rest along a smooth inclined plane of angle of inclination θ. The angular momentum of the body about the instantaneous point of contact after a time 't' from the instant of release is :

A loop and a disc have same mass and roll without slipping with same linear velocity. If the total kinetic energy of loop is 8J, then total kinetic energy of disc is :

A rolling object rolls without slipping down an inclined plane (angle of inclination θ) then the minimum acceleration it can have is :

A solid sphere of mass 1kg, radius 10 cm rolls down an inclined plane of height 7m. The velocity of its centre as it reaches the ground level is:

If several wrench, all apply the same torque to a nut, then graph between force applied F and length of wrench ℓ is:

Find the value of V if there is no slipping anywhere on cylinder:

A pulley of radius 10 cm and moment of inertia 0.32 kg.m² about its axis has a massless cord wrapped around its rim. A 2 kg mass is attached to the end of the cord. The pulley can rotate about its axis without any friction. Find the acceleration of the mass M. (Assume g = 10 m/s²)