Question

Hello...







1-A work of 4800J is done on a load of mass 40 kg to lift to a certain height. Calculate the height through
which the load is lifted
​

Answer 1

Answer:

$\bigstar{\bold{Height\:=\:12.24\:m}}$

Explanation:

$\Large{\underline{\underline{\it{Given:}}}}$

• Work done = (W) = 4800 J
• Mass of the body = (m)= 40kg

$\Large{\underline{\underline{\it{To\:Find:}}}}$

• Height to which the body is lifted(h)

$\Large{\underline{\underline{\it{Solution:}}}}$

→ Here work done is stored as potential energy (U)on the body

→ Formula for finding potential energy is given by

  U = mgh

  where g is the acceleration due to gravity = 9.8m/s²

→ Substituting the datas, we get the value of h

  4800 = 40×9.8×h

  h = 12.24 m

  $\boxed{\bold{Height\:=\:12.24\:m}}$

$\Large{\underline{\underline{\it{Notes:}}}}$

$\dag$ Potential energy of a body is the energy stored in a body due to its position or configuration. It is denoted by U.

$\dag$ U = mgh