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A rectangular block of mass  and height  is resting on a smooth level surface. A force  is applied to one corner as shown in Figure. At what point should a parallel force  be applied in order that the block shall undergo pure translational motion? Assume normal contact force between the block and surface passes through the centre of gravity of the block

a)

vertically above centre of gravity

b)

vertically above centre of gravity

c)

No such point exists

d)

It is not possible



Question ID - 100510 | SaraNextGen Top Answer

A rectangular block of mass  and height  is resting on a smooth level surface. A force  is applied to one corner as shown in Figure. At what point should a parallel force  be applied in order that the block shall undergo pure translational motion? Assume normal contact force between the block and surface passes through the centre of gravity of the block

a)

vertically above centre of gravity

b)

vertically above centre of gravity

c)

No such point exists

d)

It is not possible

1 Answer
127 votes
Answer Key / Explanation : (b) -

(b)

The free-body diagram of the block can be drawn a shown as the body has to move in pure translation motion, the torque about the centre of gravity must be zero

127 votes


127