Question

Sakshi takes 15 seconds to carry a bag of 10kg to a height of 15 metres. Find power. ​

Answer 1

Given :-

• Mass, m = 10 kg

• Height, h = 15 m

• Time taken, t = 15 sec

To Find :-

• How much power has Sakshi used =?

Solution :-

We know,

$\blue{\bigstar \ \boxed{\rm P=\dfrac{W}{t}=\dfrac{mgh}{t}}}$

Where,

P = Power

W = Work

T = Time

m = Mass

g = Acceleration ( due to gravity)

h = Height

On putting the given values, we get

⟹ P = (10 × 9.8 × 15) /15

⟹ P = 9.8 × 10

⟹ P = 98 W

Therefore, power ( P) is = 98 W

Know more :-

★ What is power?

⟹ Power is the rate at which energy is transferred or work is done.

Formula :-

P = W/t Or, ∆E / t

Unit of power :- J/s or, watt ( W)