Consider a mass attached to an ideal spring which is moving without friction. Wh

ID: 1550395 • Letter: C

Question

Consider a mass attached to an ideal spring which is moving without friction. Which of the following statements is incorrect?

a. In spring oscillations, the force on the mass is proportional to the displacement and always points away from the equilibrium point.

b. Mechanical energy is conserved.

c. The acceleration of the mass at the instant it moves through the equilibrium point is zero.

d. The distance traveled by the block in one full oscillation is four times the amplitude of oscillation.

e. The maximum speed of the mass is proportional to the amplitude of the motion.

Part a is incorrect as force on the mass always points towards equilibrium point nor away from equilibrium point.

Part b is correct as energy is conserved in the absence of friction

Part c is also correct as acceleration is zero at equilibrium point due to zero force.

Part d is also quite obvious.

Part e is also correct as maximum speed is directly proportional to amplitude, more the amplitude more the maximum speed.

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