Work Energy Principle
9 practice questionsEngineering DynamicsStep-by-step solutions
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1
A 2 kg object is lifted to a height of 5 m. The work done against gravity is (g = 9.81 m/s²):
A.98.1 J
B.10 J
C.49 J
D.19.6 J
2
Mechanical work is force multiplied by:
A.Time
B.Displacement in the force's direction
C.Mass
D.Temperature
3
The work–energy principle states that the work done by the net force equals the change in:
A.Momentum
B.Kinetic energy
C.Mass
D.Acceleration
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