The potential energy of an object is given by the formula PE = mgh, where m is the mass of the object, g is the acceleration due to gravity, and h is the height of the object.
In this case, the mass of the weight is 65 kg, the acceleration due to gravity is 9.8 m/s^2, and the height that Ms. Avari lifts the weight is 2 meters.
PE = (65 kg)(9.8 m/s^2)(2 m) = 1,274 J
Therefore, the answer is (a) 1275.3 J (rounded to the nearest tenth).
Ms. Avari is lifting 65 kg weights in kettle bell class. She needs to swing the kettle bell over her head, a total of 2 meters off the ground. What potential energy do the weight when Ms. Avari is holding it over her head?
a
1275.3 J
b
520 J
c
130 J
d
260 J
e
2,550.6 J
f
637.65 J
1 answer
1 answer