In the figure, the distance `BQ=3m, BP=14m` at time `t=0`. The system of blocks is released from rest at time `t=0`. The string connecting `B` and `C` is suddenly cut at time `t=2s`. Calculate the velocity of `B` at the instant when it hits the pulley `Q`. The coefficient of friction between `B` and the horizontal surface is `mu_(s)=mu_(k)=0.25`. Take `g=9.8 m//s^(2)`

A block of mass 50 kg slides over a horizontal distance of 1m. If the coefficient of friction between their surface is 0.2, then work done against friction is (take g = 9.8 m//s^(2) ) :

A block of mass 50 kg slides over a horizontal distance of 1m. If the coefficient of friction between their surface is 0.2, then work done against friction is (take g = 9.8 m//s^(2) ) :

Calculate the horizontal force required to just move a block of mass 40kg resting on the horizontal surface given (mu_s = 0.3) , g = 9.8 m//s^2

A car starts from rest at time t = 0 and it a-t graph is shown in figure. A coin is initially at rest on the floor of the car. At t = 1 s the coin begins to slip and it stops slipping at t = 3 s. The coefficient of static friction between the floor and the coin is (g = 10 m/ s^2 )

A car starts from rest at time t = 0 and it a-t graph is shown in figure. A coin is initially at rest on the floor of the car. At t = 1 s the coin begins to slip and it stops slipping at t = 3 s. The coefficient of static friction between the floor and the coin is (g = 10 m/ s^2 )

Block B rests on surface . If the coefficient of static friction between A and B is mu = 0.4 . Determine the acceleration of each , if (a) F = 30 N and (b) F = 250 N (g = 10 m//s^(2))

Block B rests on surface . If the coefficient of static friction between A and B is mu = 0.4 . Determine the acceleration of each , if (a) F = 30 N and (b) F = 250 N (g = 10 m//s^(2))

Calculate the horizontal force required to just move a block of mass 20kg resting on a horizontalsurface (mu_s = 0.3 , g= 9.8m//s^2)

Three blocks A , B and C , whose masses are 9kg , 9kg and 18kg respectively as shown in the figure, are released from rest. The co-efficient of friction between block A and the horizontal surface is 0.5 & the co-efficient of friction between block B and the horizontal surface is 0.5 . Find the acceleration of block C just release [Take g=10m//s^(2) ]. All strings and pulleys are ideal

Three blocks A , B and C , whose masses are 9kg , 9kg and 18kg respectively as shown in the figure, are released from rest. The co-efficient of friction between block A and the horizontal surface is 0.5 & the co-efficient of friction between block B and the horizontal surface is 0.5 . Find the acceleration of block C just release [Take g=10m//s^(2) ]. All strings and pulleys are ideal