A force used to lift a 12-kilogram mass to a height of 8 meters in 2 seconds does 1040 joules of work.
QUESTIONS:
A;How much force is used?
B;What power is developed?
ya but i need answers for questions a and b can u just tell me
Force*distance=1040
you know distance, solve for force.
power= 1040/2 watts
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s=g w=a p=y q=a d=s f=s t=h y=i r=t
To find the force used to lift the mass, we can use the work-energy principle which states that the work done on an object is equal to the force applied multiplied by the distance traveled in the direction of the force.
A; Calculating the force:
Using the formula for work, W = F * d, where W is the work done (1040 joules) and d is the distance traveled (8 meters), we can rearrange the formula to solve for force (F):
F = W / d
F = 1040 J / 8 m
F = 130 Newtons
Thus, the force used to lift the 12-kilogram mass to a height of 8 meters is 130 Newtons.
B; Calculating the power developed:
Power is defined as the rate at which work is done. It can be calculated by dividing the work done by the time taken.
Using the formula for power, P = W / t, where P is the power (to be determined), W is the work done (1040 joules), and t is the time taken (2 seconds):
P = W / t
P = 1040 J / 2 s
P = 520 watts
Therefore, the power developed is 520 watts.