an unstretched rubber band is sitting on a table and has 5 units of gravitational potential energy. what is…
an unstretched rubber band is sitting on a table and has 5 units of gravitational potential energy. what is the total energy? 6 units 8 units 3 units 5 units
Answer
Explanation:
Step1: Analyze the motion state
The rubber band is sitting on the table, so its velocity is 0, and the kinetic energy ( E_{k} = 0 ) (because kinetic energy ( E_{k}=\frac{1}{2}mv^{2} ), when ( v = 0 ), ( E_{k}=0 )).
Step2: Calculate total energy
Total energy ( E_{total}=E_{p} + E_{k} ). Given ( E_{p} = 5 ) units and ( E_{k}=0 ) units, so ( E_{total}=5 + 0=5 ) units.
Answer:
5 units (corresponding to the option: 5 units)