Answer:
Force, F = 500 N
Explanation:
Given that,
Power expanded, P = 1000 W
Distance moved by piano, d = 10 m
Time taken, t = 5 s
To find,
The force exerted by the person
Solution,
The rate at which the work is being done is called power delivered. Its formula is given by:
[tex]P=\dfrac{W}{t}[/tex]
W is the work done, W = F × d
[tex]P=\dfrac{Fd}{t}[/tex]
On rearranging the above formula to find F as :
[tex]F=\dfrac{P t}{d}[/tex]
[tex]F=\dfrac{1000\times 5}{10}[/tex]
F = 500 N
Therefore, the force exerted on the person is 500 N. Hence, this is the required solution.
