Kinematics Question 255

Question: A particle moves from position 3i^+2j^6k^ to 14i^+13j^+9k^ due to a uniform force of (4i^+j^+3k^)N. If the displacement in meters then work done will be [CMEET 1995; Pb. PMT 2002, 03]

Options:

A) 100 J

B) 200 J

C) 300 J

D) 250 J

Show Answer

Answer:

Correct Answer: A

Solution:

S=r2r1

W=F.S

=(4i^+j^+3k^).(11i^+11j^+15k^)

=(4×11+1×11+3×15)=100J.



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