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Ravi applied a force of 10 N and moved a book 30 cm in the direction of the force. How much was the work done by Ravi?

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Question

Ravi applied a force of 10 N and moved a book 30 cm in the direction of the force. How much was the work done by Ravi?

Numerical
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Solution

Given:

Force (F) = 10 N,

Displacement (s) = 30 cm

= 30 × 10−2 m

Find: Work done (W) = ?

Formula: W = F × s

Calculations:

W = 10 × 30 × 10−2 

W = `(10 xx 30)/100`

W = 3 J

Work done by Ravi is 3 J.

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Chapter 2: Work and Energy - Exercises [Page 29]

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Balbharati Science and Technology [English] Standard 9 Maharashtra State
Chapter 2 Work and Energy
Exercises | Q 5. e. | Page 29

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