List of top Physics Questions on tension asked in WBJEE

A particle of mass \( m \) is suspended from a point O by a string of length \( R \). It is given a velocity \( u = 3\sqrt{gR} \) at the bottom. The difference in tension at point B and at the point C is

Three blocks of masses \( m_1 = 2\text{ kg} \), \( m_2 = 3\text{ kg} \) and \( m_3 = 5\text{ kg} \) are placed on a horizontal frictionless surface and a force of \( 30\text{ N} \) pulls the system as shown below. The value of tension \( T \) will be