Question

What is the potential energy at point e when the total mechanical energy is 4900 for the 100 kg moving at 2 m/ s

Answer 1

The potential energy at point e when the total mechanical energy is 4900 J for a 100 kg object moving at 2 m/s is 4700 J.

Step-by-step explanation:

Potential energy at point e can be calculated using the equation for mechanical energy:

Mechanical Energy = Potential Energy + Kinetic Energy

Given that the total mechanical energy is 4900 J, and the mass of the object is 100 kg, and it is moving at a velocity of 2 m/s, we can substitute these values into the equation to solve for the potential energy at point e.

Mechanical Energy = Potential Energy + Kinetic Energy

4900 J = Potential Energy + (1/2)(100 kg)(2 m/s)^2

4900 J = Potential Energy + 200 J

Potential Energy = 4900 J - 200 J

Potential Energy = 4700 J

Answer 2

B. 4700 J

Step-by-step explanation:

Given the following data;

Mechanical energy = 4900J

Mass = 100kg

Velocity = 2m/s

To find the potential energy;

Mechanical energy = kinetic energy + potential energy

First of all, we would determine the kinetic energy of the object;

K.E = ½mv²

K.E = ½*100*2²

K.E = 50*4

K.E = 200 J

Substituting into the equation, we have;

4900 = 200 + P.E

P.E = 4900 - 200

P.E = 4700 Joules