Physics, 02.03.2020 00:28 yami85

If we increase the amount of work, and all other factors remain the same, the amount of power will?

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Answer from: owoeli

With the increase in the amount of work, the amount of power will also increase as much there is increase in the work.

Explanation:

If we increase the amount of work and all other factors remain the same then amount of power will increase as the power increases with the increase in the amount of work done.

Similarly when there is decrease in the amount of the work that is to be done,The amount of power decreases with the decrease in the amount of work in a given interval of time.

Answer from: Quest

Wish i knew this to !

Answer from: Quest

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

$f\alpha \frac{dp}{dt}$

⇒ $f= k \frac{dp}{dt}$

here k is the proportionality constant whose value is 1.

$f=\frac{dp}{dt}$

$f= \frac{d[mv]}{dt}$

$f= m\frac{dv}{dt} +v\frac{dm}{dt}$

$f=ma+v\frac{dm}{dt}$ [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.

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