A heavy body of mass `25kg` is to be dragged along a horizontal plane (`mu` = `(1)/(sqrt(3))`. The least force required is `(1 kgf = 9.8 N)`

A body of mass 1kg is moving along a straight line with a velocity of 1m//s . The external force acting in the body is

A block of mass sqrt3 kg is kept on a frictional surface with mu =(1)/(2sqrt3) . The minimum force to be applied as shown the move the block is .

A body of mass 10 kg is lying on a rough inclined plane of inclination 37^(@) and mu = 1//2 , the minimum force required to pull the body up the plane is

A block of mass m=1/3 kg is kept on a rough horizontal plane. Friction coefficient is mu=0.75 . The work done by minimum force required to drag to the block along the plane by a distance 5m is :-

A body of mass 2 kg is being dragged with uniform velocity of 2 m / s on a rough horizontal plane. The coefficient of friction between the body and the surface is 0.20. The amount of heat generated in 5 sec is . (4.2"joule"//cal and g=9.8 m//s^(2))

A body of mass 10 kg slides a long a rough horizontal surfce. The coefficient of friction is 1//sqrt(3) . Taking g=10m//s^(2) . The least force which acts at an angle of 30^(@) to the horizontal is