Question

Mrs. Martin is holding a ball from a height of 3.2 m that has the potential energy of 23 J, calculate the mass of the ball.

Answer 1

Answer:

0.73kg

Explanation:

Potential gravitational energy is equal to $Pe=mgh$, where Pe is potential gravitational energy, m is mass in kilograms, g is gravity in m/s^2 and h is height in meters.

Substitute:

$Pe=mgh\\23=m*9.8*3.2\\23=31.36m\\0.73=m$