A body of mass 10 kg is to be raised by a massless string from rest to rest, through a height 9.8 m. The greatest tension which the string can safely bear is 20 kg-wt. The least time of ascent is

A lift total mass M is raised by cables from rest to rest through a height h. the greatest tension which the cables can safely bear is n Mg. the maximum speed of lift during its journey if the ascent is to made. In shortest time is

A lift of total mass M is raised by cable from rest through a height h . The greatest tension which the cables car safely bear is n Mg. The maximum sped of lift during its journey if the ascent is to made in shortest time is

A body of mass 20kg is moving on a rough horizontal plane. A block of mass 3kg is connected to the 20 kg mass by a string of negligible mass through a smooth pulley as shown in the figure. The tension in the string is 27 N. The coefficient of kinetic friction between the heavier mass and the surface is (g = 10m/ s^2 )

Two masses 2 kg and 4 kg are tied at the ends of a massless string and which is passing over a frictionless pulley. The tension in the string is

A body of mass 10 kg is suspended by a string and is pulled a side with a horizontal force of 49 N. Find the tension in the string, if the body is in equilibrium under these forces.

A body of mass 10 kg is suspended by a string and is pulled a side with a horizontal force of 49 N. Find the tension in the string, if the body is in equilibrium under these forces.