Which of the following examples describes an increase in potential energy?
2 answers:
Answer: D. a paint can being carried up a ladder
Explanation: Potential energy is the energy possessed by an object by virtue of its height.
m= mass
g = acceleration due to gravity
h = height
Thus Potential energy is directly proportional to the height of the body. The greater the height, greater is the potential energy. Thus a paint can being carried up a ladder will lead to increase in potential energy as height will keep on increasing.
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Answer:
w = 706.32 [N]
Explanation:
The force due to gravitational acceleration can be calculated by means of the product of mass by gravitational acceleration.
w = m*g
where:
w = weight [N] (units of Newtons)
m = mass = 72 [kg]
g = gravity acceleration = 9.81 [m/s²]
Then we have: