Question

a body of 40 kg mass. is taken to a height of 5metre . what is the work done? given g=10ms-2​

Answer 1

Answer:

Potential energy (U)  is given by the expression,

U= mgh

Where,

m = Mass of the object

h = Vertical displacement

g = Acceleration because of gravity = 9.8 ms-2

W= 40 X 9.8 X 5

W= 1960 J

At half-way down, the Kinetic energy of the item are going to be

At this time, the item has an equal quantity of potential and K.E.

This can be due to law of conservation of energy. Hence, half-way down, the K.E. of the object can be calculated as

1960 J/ 2 = 980 J

half way down = 980 J

Explanation:

Answer 2

Explanation:

mass=40kg

height=5m

g=10m/s^2

P. E=m×g×h

=40*5*10

=2000 joule

hope it helps u

mark it as brainliest