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Question:

A particle moving with velocitybarVis acted by three forces shown by the vector triangle PQR. The velocity of the particle will :A particle moving with velocitybarVis acted by three forces shown by the vector triangle PQR. The velocity of the particle will :AIncreaseIncreaseBDecreaseDecreaseCChange according to the smallest forceChange according to the smallest forceDRemain constantRemain constant?

Increase

Decrease

Change according to the smallest force

Remain constant

Solution:

Correct option is C. Remain constantAs forces are forming closed loop in same orderSo,F→net=0⇒mdv→dt=0⇒→= constant