Question

If it takes 50 seconds to lift 10 Newtons of books to a height of 7 meters, calculate the power required.

=》Say​

Answer 1

Answer:

hope it helps.........

Explanation:

the work of the force F = 10 is

W = 7 . 10 = 70 Joules

and

as the work is performed in T = 50s

the power is

P = W / T = 70/50

P = 1.4 Watts

Answer 2

Given :-

Work of the force = 10 N

Time required for the work = 50 sec

Height = 7 m

To Find :-

The power required.

Analysis :-

We are given with the value of work and time in the question.

Substitute the values in the formula of power and then you'll get the power required.

Solution :-

We know that,

• w = Work
• p = Power
• t = Time

By the formula,

$\underline{\boxed{\sf Power=\dfrac{Work}{Time} }}$

Given that,

Work (w) = 7 m = 70 Joules

Time (t) = 50 sec

Substituting their values,

p = 70/50

p = 1.4 watts

Therefore, the power required is 1.4 watts.