A 5-Kg Box Is Pushed 5 M Up a Plane

question 3

Multiple Choice

A 5-kg box is pushed 5 m up a plane that is inclined at 30º with the horizontal.The coefficient of kinetic friction between the box and the plane is 0.20.The change in potential energy of the box is approximately

• A)12.5 J
• B)34.2 J
• C)123 J
• D)345 J
• E)403 J

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Definitions:

Isometric

A type of exercise where the muscle length does not change during contraction, often used for strength training.

Isometric

Exercises or muscle actions where the muscle length does not change, typically involving resistance without movement, to increase strength.

Isokinetic

Pertaining to muscle action with a constant speed of contraction, often used in physical therapy and exercise testing.

Isotonic

Refers to exercises or contractions where the muscle changes length as it contracts, commonly associated with lifting weights.