Posted by michelle quendarsv on Saturday, November 20, 2010 at 3:55pm.
if it takes 726 watts of power to move a mass 36 meters in 14 seeconds, what is the mass?
i really need like, step by step help please? asap.
thanks, michelle .
physics - bobpursley, Saturday, November 20, 2010 at 4:06pm
power= work/time= mass*g*distance/time
mass= power*time/distance*g
physics - michelle quendarsv, Saturday, November 20, 2010 at 4:24pm
so... would it be like,
726 x 14 / 36 ?
no, what happened to g (9.8m/s^2) in the denominator?
but where did you get 9.8m/s2?
To find the mass, you can use the formula:
mass = power * time / (distance * g)
where power is given as 726 watts, time is given as 14 seconds, distance is given as 36 meters, and g is the acceleration due to gravity (approximately 9.8 m/s^2).
Substituting these values into the formula, you would calculate:
mass = 726 * 14 / (36 * 9.8)
To find the answer, you need to follow the order of operations (PEMDAS/BODMAS). First, multiply 726 by 14, then divide that result by (36 * 9.8).
So the final calculation would be:
mass = (726 * 14) / (36 * 9.8) = 10116 / 352.8
To find the answer, simply divide 10116 by 352.8:
mass ≈ 28.7 kilograms
Therefore, the mass of the object will be approximately 28.7 kilograms.