Laws Of Motion

Three blocks of masses m₁, m₂, and m₃ are connected by massless strings on a frictionless table and pulled by a force T₃ = 40 N. If m₁ = 10 kg, m₂ = 6 kg, and m₃ = 4 kg, the tension T₂ will be:

A bob is hanging over a pulley inside a car moving with constant acceleration directed horizontally as shown. The second end of the string is in the hand of a person standing in the car. The car is moving with constant acceleration horizontally as shown in figure. Other end of the string is pulled with constant acceleration vertically. The tension in the string is equal to â

A block of mass is placed on a smooth inclined wedge ABC of inclination as shown in the figure. The wedge is given an acceleration towards the right. The relation between and for the block to remain stationary on the wedge is 

Block A of mass m and block B of mass 2m are placed on a fixed triangular wedge by means of a massless, inextensible string and a frictionless pulley as shown in figure. The wedge is inclined at 45^∘ to the horizontal on both the sides. If the coefficient of friction between the block A and the wedge is (2)/(3) and that between the block B and the wedge is (1)/(3) and both the blocks A and B are released from rest, the acceleration of A will be: