Question

0.5*g*(T+0.15)^2-0.5*g*T^2=2

Answer 1

2=0.5*g*(T+0.15)^2-0.5*g*T^2

=0.5g[(T+0.15)^2-T^2]

=0.5g[(T+0.15)+T]*[(T+0.15)-T]

=0.15g(2T+0.15)*0.15

=0.0225g(2T+0.15)

2T+0.15=2/(0.0225g)

T=[1/(0.0225g)]-0.075