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Work and Energy — Science STD 6 — Question

Maharashtra BoardEnglish MediumSTD 6ScienceWork and Energy5 Marks
Question

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(1) In the above activity, which are the different forces acting on the box?
(2) Is displacement possible without force?
(3) If force is applied to both the boxes is same, which box will be displaced more?
(4) If me e books are added to box, and same force is applied, will the displacement be more or less?
(5) If a force is applied with both the hands on a wall, will there be a displacement?
(6) If no displacement occurs on applying as force, what does it indicate?
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Answer

(1) In the above activity, muscular force, frictional force and gravitational force act on the box.
(2) No, force has to be applied in order to displace the box.
(3) If force applied to both the boxes is same, then empty box will be displaced more than box with books.
(4) If the same force is applied for a heavier load then the displacement will be less.
(5) Whatever be the amount of force applied, the wall will not be displaced.
(6) If no displacement occurs, then no work is said to be performed.

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