A rectangular block of size `10 cm xx 8 cm xx 5 cm` is kept in three different positions P,Q and R in turns as shown in the figure. In each case, the shaded area is rigidly fixed and a definite force F is applied tangentially to the opposite face to deform the black. The displacement of the upper face will be

An 8 kg metal block of dimensions 16 cm xx 8 cm xx 6 cm is lying on a table with its face of largest area touching the table. If g= 10ms^(-2) , then the minimum amount of work done in making it stand with its length vertical is

An 8 kg metal block of dimensions 16 cm xx 8 cm xx 6 cm is lying on a table with its face of largest area touching the table. If g= 10ms^(-2) , then the minimum amount of work done in making it stand with its length vertical is

A rectangular wooden box 10 cm xx 20cm xx 40 cm is size is kept on a horizontal surface with its of lergest are on the surface .A minimum force of 10 N applied are on the surface sets the box in sliding motion along the surface If the surface, minimum force applied parallel to the surface , to set the box in motion , is

A rectangular wooden box 10 cm xx 20cm xx 40 cm is size is kept on a horizontal surface with its of lergest are on the surface .A minimum force of 10 N applied are on the surface sets the box in sliding motion along the surface If the surface, minimum force applied parallel to the surface , to set the box in motion , is

A rubber cube of side 5 cm has one face fixed while a tangential force 1800N is applied on its opposite face. If modulus of rigidity of rubber is 2.4 xx 10^(6) Nm^(-2) , then the lateral displacement of the strained face is _____

A rectangular loop of wire of size 4 cm xx 10 cm carries a steady current of 2A. A straight long wire carrying 5 A current is kept near the loop as shown. If the loop and the wire are coplanar, find (i) the torque acting on the loop and (ii) the magnitude and direction of the force on the loop due to the current carrying wire.