A body of mass 1 kg begins to move from rest under the action of a time dependent force F → = 2 t i ^ + 3 t 2 j ^ N , where i ^ and j ^ are unit vectors along x and y axis. What power will be developed by the force at the time t?

Question

A body of mass 1 kg begins to move from rest under the action of a time dependent force F → = 2 t i ^ + 3 t 2 j ^ N , where i ^ and j ^ are unit vectors along x and y axis. What power will be developed by the force at the time t?, 2 t 2 + 3 t 3 W, 2 t 2 + 4 t 4 W, 2 t 3 + 3 t 4 W, 2 t 3 + 3 t 5 W

MARKS App · Accepted Answer

a → = 2 t i ^ + 3 t 2 j ^ V → = 2t 2 2 i ^ + 3 3 t 3 j ^ F → = 2 t i ^ + 3 t 2 j ^ P = F → . V → = 2 t 3 + 3 t 5

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