Answer:
W = 12 J
Explanation:
Given that,
Force, F = 4 N
The object moves in rightward direction for a distance of 3 m.
Work done on the object is given by :
So, the work done on the object is 12 J.
Which transformation of energy occurs in a hydroelectric power plant?
1 answer:
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Answer:
P = 1412.82 [Watt]
Explanation:
First we must calculate the total mass that makes up the barbell and the two free weights at each end of the barbell.
Weight is now defined as the product of mass by gravitational acceleration.
where:
m = mass = 80 [kg]
g = gravity acceleration = 9.81 [m/s²]
Now using the product of the weight by the distance traveled we can calculate the work.
where:
W = work [J]
w = weight = 784.8 [N]
d = distance = 0.9 [m]
And power is defined as the relationship of work at a certain time. The potency is expressed by means of the following formula.