Question

frank does 2400 j of work in climbing a set of stairs . if he does the work in 6 seconds , what is the power output​

Answer 1

Answer:

The power output is 400 Watts. Step-by-step explanation:

Work done by Frank = 2400 J

He climbed the stairs in = 6 seconds

Power = ??

$\boxed{\sf{Power = \frac{Work \: done}{Time \: taken}}}$

• Work = 2400 J
• Time = 6 seconds

$\sf{\longrightarrow} \: Power = \dfrac{2400}{6}$

$\sf{\longrightarrow} \: Power =400$

Power = 400 Watts.

Therefore, the power output is 400 Watts.

Additional Information:

• Power can be defined as the rate of doing any work.

• Unit of power is watt.

• 1 watt is the work done at rate of 1 joule per second.

Answer 2

Answer:

• Given:-

• Work done (w) = 2400 j
• Time taken (t) = 6 sec

• To find:-

• Power (P).

• Solution:-

★ Formula used:

${\large{\boxed{\sf{Power (P)=\dfrac{Work(w)}{Time(t)}}}}}$

Now put values in this formula.

$\implies\sf{Power(P)=\dfrac{2400}{6}}$

$\implies\sf{Power (P)=400}$

Hence, the power is 400 w.

★ Additional notes :-

• Work is said to be done only when a body applies force on an object and the object displaces from its initial position.
• Power is known as the rate of doing work.
• SI unit of power is Watt which is equal to 1 j/s.