Question

A particle moves from point r1 =(2i +3j) to another point r2(3i+2j) during which a certain force F=(5i+5j) acts on it calculate work done by the force on the particle during this displacement

Answer 1

Answer:0 Joules

Explanation:

Answer 2

The work done by the force on the particle during this displacement is zero.

Explanation:

The distance between two points $r_1$ and $r_2$.

$r_2-r_1=3i+2j-(2i+3j)\\r_2-r_1=3i+2j-2i-3j\\r_2-r_1=i-j$

Work Done = Force X Displacement

Work Done $=(5i+5j).(i-j)$

Work Done $=5-5$

Work Done $=0$

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