CBSE
Gujarat Board
Haryana Board
Class 10
Class 12
A body of mass 1 kg begins to move under the action of a time dependent force F =Â Â N, whereÂ Â are units vectors along X and Y axis. What power will be developed by the force at the time (t)?
(2t^{2} + 4t^{4}) W
(2t^{3} + 3 t^{4}) W
(2t^{3} + 3t^{5}) W
(2t + 3t^{3})W
C.
(2t^{3} + 3t^{5}) W
A body of mass 1 kg begins to move under the action of time dependent force,
F = (2tÂ +3t^{2}Â ) N,
whereÂ Â are unit vectors along X and Y axis.
F = ma
Acceleration, a =Â
Integrating both sides, we get
Power developed by the force at the time t will be given as,
P = F.v = (2tÂ Â + 3t^{2}Â ).()
Â Â = (2t. t^{2} + 3t^{2}.t^{3})
P = (2t^{3} + 3t^{5}) W
A body of mass 1 kg begins to move under the action of time dependent force,
F = (2tÂ +3t^{2}Â ) N,
whereÂ Â are unit vectors along X and Y axis.
F = ma
Acceleration, a =Â
Integrating both sides, we get
Power developed by the force at the time t will be given as,
P = F.v = (2tÂ Â + 3t^{2}Â ).()
Â Â = (2t. t^{2} + 3t^{2}.t^{3})
P = (2t^{3} + 3t^{5}) W