Chapter 10

NCERT
Class 9
Science
Solutions
8. Does the transfer of energy take place when you push a huge rock with all your might and fail to move it? Where is the energy you spend going?

Question:

Does the transfer of energy take place when you push a huge rock with all your might and fail to move it? Where is the energy you spend going?

Answer:

In pushing a huge rock no transfer of muscular energy takes place because when we fail to push it, then that muscular energy is spent in working against the friction between the earth and the rock and no work is done as no displacement occurs.

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