Physics, 28.11.2020 02:30 lhecker007

Calculate: The mechanical advantage of a lever is how much it multiplies your effort. If you can lift a 1200-N sheep with only 600 N of effort, the lever doubled your effort, so its mechanical advantage is 2. (Notice you can just divide load by effort: 1200 ÷ 600 = 2.) Calculate the mechanical advantage of the lever with the strongman at each distance:

2 meters:

3 meters:

4 meters:

Answers: 2

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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.

Answer from: Quest

Your answer would be, the due process clause of the 14th., and 5th. amendments differ the clause in the 14th. amendment has been interpreted, to mean that state government must provide some of the protections within the bill of rights.your answer would be, the clause in the 5th. amendment was specifically written to restrict a new powerful government.hope that !

Answer from: Quest

Shania is trying to determine the oldest geologic unit on this map and the reason to why is she unable to do so is that the units are all the same age.. when there is the same age, there will be no oldest geologic unit and that i cannot be credible.

Answer from: Quest

F you double the force, you double the acceleration, but if you double the mass, you velocity. all bodies accelerate at the same rate regardless of size or mass.

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Calculate: The mechanical advantage of a lever is how much it multiplies your effort. If you can lif...