Question

t
Example 1 /
A boy pushes a book kept on a table by
applying a force of 4.5 N. Find the work
done by the force if the book is displaced
through 30 cm along the direction of push.
n​

Answer 1

Answer:

• 1.35 J

Explanation:

Given

• Force applied on the book (F) = 4.5 N
• Displacement (s) = 30 cm
• Displacement (s) = 30/100 m
• Displacement (s) = 0.3 m

To find

• Work done (W)

Solution

• W = F . s
• W = 4.5 × 0.3
• W = 1.35

Hence, the work done is 1.35 J

Answer 2

Answer:

W = F . s

W = 4.5 × 0.3

W = 1.35 J

Explanation: