Question

An iron block of sides $50\, cm$ $\times 8 \,cm$ $\times15 \,cm$ has to be pushed along the floor. The force required will be minimum when the surface in contact with ground is

• A. $8 \,cm$ x $15 \,cm$ surface
• B. $50\, cm$ x$15\, cm$ surface
• C. $8\, cm$ x $50\, cm$ surface
• D. force is same for all surfaces

Answer 1

Answer: (D)

force is same for all surfaces

Answer 2

Force will be same for all the surfaces.