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Grade: 11
        
The displacement x of a body of mass 1 kg on a horizontal smooth surface has the function of the time t is given by x=t⁴/4. The work done in first one second is
10 months ago

Answers : (1)

Arun
22545 Points
							
x = t^4 / 4  meters               m = 1 kg
dx = t²^3dt
dx/dt = v = t^3
d²x/dt² = a = 3 t^2

force acting on the body = m a = 3 t^2  Newtons
 
now fornwork done integrate F. dx
10 months ago
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