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This isn't homework. A friend asked about this so I decided to work out the formulas, but wanted to know if this was already done by someone here (otherwise I'll do the math).
p = power (constant)
a = acceleration
v = velocity
x = position
t = time
f = force
Assume an object is initially at rest, at position zero and time zero:
v0 = 0
x0 = 0
t0 = 0
f = m a
p = f v
f = p / v
first step
a = f / m = dv/dt = p / (m v)
v dv = (p/m) dt
1/2 v2 = (p/m) t
[tex] v = \frac{dx}{dt} = \sqrt {\frac{2\ p\ t}{m}} [/tex]
This is continued to find x as a function of t, then t as a function of x
Then determine f(x) = p / v(x)
and finally show that work done is
[tex]p\ t_1 = \int_0^{x_1} f(x) dx [/tex]
p = power (constant)
a = acceleration
v = velocity
x = position
t = time
f = force
Assume an object is initially at rest, at position zero and time zero:
v0 = 0
x0 = 0
t0 = 0
f = m a
p = f v
f = p / v
first step
a = f / m = dv/dt = p / (m v)
v dv = (p/m) dt
1/2 v2 = (p/m) t
[tex] v = \frac{dx}{dt} = \sqrt {\frac{2\ p\ t}{m}} [/tex]
This is continued to find x as a function of t, then t as a function of x
Then determine f(x) = p / v(x)
and finally show that work done is
[tex]p\ t_1 = \int_0^{x_1} f(x) dx [/tex]