Question

Find the work done by a force F = (3x)i N in displacing a
particle from r=2 m to x=4m
(1) 6)
(2) 12)
(3) 18)
(4) 24)​

Answer 1

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Answer 2

Answer:

Option 1 is right

Explanation:

Concept

• In Physics, force is defined as: The push or pull on an object with mass that causes it to change its velocity. Force is an external agent capable of changing the state of rest or motion of a particular body. It has a magnitude and a direction.

Given

displacing a

particle from r=2 m to x=4m

Find

work done by a force F = (3x)i N

Solution

$\int \omega =\int d \cdot d \gamma$

$\int w =\int d \int_{f} \cdot \int_{2}^{4} d \gamma$

$w =d f \int_{2}^{4} d \gamma$

$=3 d \int_{w}^{4-2}=2$

$w =6$

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