Question

-. A stone of 50 g is kept on a wall of 10 m height. Find its potential energy. If the stone is allowed to fall with what velocity will it strike the ground?​

Answer 1

Answer:

Energy =4.903325 joules

velocity = 14.00 m/s

Explanation:

Given:-

Mass of stone = 50g = (50/1000)kg

height = 10 m

Acceleration due to gravity on earth = 9.80665 m/s^2

potential energy = mass * acceleration due to gravity * height

= (50/1000) * 9.80665 * 10

= 4.903325 joules

Velocity of stone

Initial velocity = 0m/s^2

v = final velocity

u = initial velocity

a = acceleration

s = height or distance

v^2 = u^2 + 2as

v^2 = 0^2 + 2 * 9.80665 * 10

v^2 = 196.133

v = square root( 196.133)

final velocity = 14m/s