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kherson [118]
3 years ago
7

You do 45.0 joules of work and 3.00 seconds how much power do you use​

Physics
1 answer:
Arada [10]3 years ago
8 0

Answer:

15 watt

Explanation:

Power is the rate at which work is done.

This means you divide the work done with the amount of time used to perform the work.

The formula for Power is : P = W/t  where;

W= work done in J = 45

t= time in seconds = 3 sec

P= 45/ 3 = 15 watt

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Answer:

Tension= 21,900N

Components of Normal force

Fnx= 17900N

Fny= 22700N

FN= 28900N

Explanation:

Tension in the cable is calculated by:

Etorque= -FBcostheta(1/2L)+FT(3/4L)-FWcostheta(L)= I&=0 static equilibrium

FTorque(3/4L)= FBcostheta(1/2L)+ FWcostheta(L)

Ftorque=(Fcostheta(1/2L)+FWcosL)/(3/4L)

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Ftorque= 21900N

b) components of Normal force

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Fnx=21900cos(90-55)=17900N

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The Normal force

FN=sqrt(17900^2+22700^2)

FN= 28.900N

4 0
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