SaraNextGen.Com


Two blocks  and  ( ) are connected with a spring of force constant  and are inclined at a angel  with horizontal. If the system is released from rest, which one of the following statements is/are correct?

a)

Maximum compression in the spring   if there is no friction anywhere

b)

There will be no compression or elongation in the spring if there is no friction any where

c)

If  is smooth and  is rough there will be compression in the spring

d)

Maximum elongation in the spring is  if all the surfaces are smooth


Question ID - 52295 | Toppr Answer

Two blocks  and  ( ) are connected with a spring of force constant  and are inclined at a angel  with horizontal. If the system is released from rest, which one of the following statements is/are correct?

a)

Maximum compression in the spring   if there is no friction anywhere

b)

There will be no compression or elongation in the spring if there is no friction any where

c)

If  is smooth and  is rough there will be compression in the spring

d)

Maximum elongation in the spring is  if all the surfaces are smooth

1 Answer - 5876 Votes

3537

Answer Key : (b) -

(b)

If the surface is smooth, then relative acceleration between blocks is zero. So, no compression or elongation takes place in spring. Hence, spring force on blocks is zero.



SaraNextGen