Simple harmonic motion

An object is undergoing a SHM, at which point(s) is its acceleration maximal?

• At x(t)=0

• At x(t)=2A

• At x(t) < 0

• At x(t)= ± A

Two system doing harmonic oscillations of equal amplitudes

• Always have equal periods

• Never have equal periods

• They can have, but will not always, have equal periods

A weight suspended from a spring oscillates because:

• A constant outside force is exerted on it.

• A variable elastic force is exerted on it.

• Sum of forces exerted on it is zero

• A constant elastic force is exerted on it.

A weight is placed on a spring. When the mass of the weight increases two times what happens to period of oscillations of the system?

• Increases twofold

• Increases, but less than twofold

• remains constant

• Reduces by half

An 10 g weight is placed on a spring. Total energy in the system is 5 J. Calculate the elastic potential energy as the weight is in the amplitude position?

• 5 J

• 2,5 J

• 1 J

• 0 J

• 10 J

SHM has an amplitude of 1 cm and period of 1 s. Maximum acceleration of the system is:

• 6,28 m/s2

• 6,28 cm/s2

• 39,4 cm/s2

• 3,94 cm/s2

On the graph below mark: A) One period B) Every equilibrium position.