Pulling a trolley : Force applied :: Squeezing a sponge : ___?

Pulling a trolley : Force applied :: Squeezing a sponge : ___?
  1. Energy created
  2. Force applied
  3. Friction removed
  4. Gravity cancelled

Solution

Both pulling a trolley and squeezing a sponge require force to be applied on the object to bring about a change.

Asked in: Homi Bhabha Practice

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