A force F=t is applied to block A as shown in figure. The force is applied at t=0 seconds when the system was at rest and string is just straight without tension. Which of the following graphs gives the friction force between B and horizontal surface as a function of time 't'.

A force F=t is applied to a block A as shoen in figure where t is time in seconds. The force is applied at t=0 seconds when the system was at rest. Which of the following graph correctly gives the frictional force between A and horizontal surface an a function of time t. [Assume that at t=0 , tension in the string connecting the two blocks is zero].

A force shown in the F-x graph is applied to a 2kg block horizontal as shown in figure. The change in kinetic energy is

A force shown in the F-x graph is applied to a 2kg block horizontal as shown in figure. The change in kinetic energy is

Force 'F' is applied on block 'B' and the system remains at rest . All surface are ruogh , which of the following statement (s) is /are correct

Two blocks A and B of masses 2kg and 4kg are placed one over the other as shown in figure. A time varying horizontal force F =2t is applied on the upper block as shown in figure. Here t is in second and F is in newton. Drow a graph showing acceleration of A and B on y-axis and time on x-axis.Coefficient of friction between A and B is mu =(1)/(2) and the horizontal surface over which B is placed smooth. (g =10m//s^(2))

Two blocks A and B of masses 2kg and 4kg are placed one over the other as shown in figure. A time varying horizontal force F =2t is applied on the upper block as shown in figure. Here t is in second and F is in newton. Drow a graph showing acceleration of A and B on y-axis and time on x-axis.Coefficient of friction between A and B is mu =(1)/(2) and the horizontal surface over which B is placed smooth. (g =10m//s^(2))

A force F is applied to the initially, stationary cart. The variation of force with time is shown in the figure. The speed of cart at t = 5 s is

Two blocks A and B are as shown in figure. The minimum horizontal force F applied to the block B for which slipping behins between B and ground is :

A force F is applied to the initially stationary cart. The variation of force with time is shown in the figure. The speed of cart at t = 5 sec is

A force F is applied to the initially stationary cart. The variation of force with time is shown in the figure. The speed of cart at t = 5 sec is