Question

A body under the action of a force F = (3i + 2j -4k) N covers a displacement s = (3i – 2j +4k) m. Calculate the work done.

Answer 1

Answer:

u=kt

dt

dx

=kt

⇒dx=ktdt

or∫

0

x

dx=∫

0

3

ktdt

x=k(

2

t

2

)

0

3

=k(

2

9

)=2(

2

9

)=9m

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