A 137-Kg Block Is Held in Place Against the Spring by by a 74-N

question 22

Multiple Choice

A 1.37-kg block is held in place against the spring by a 74-N horizontal external force (see the figure) . The external force is removed, and the block is projected with a velocity v₁ = 1.2 m/s upon separation from the spring. The block descends a ramp and has a velocity at the bottom. The track is frictionless between points A and B. The block enters a rough section at B, extending to E. The coefficient of kinetic friction over this section is 0.24. The velocity of the block is at C. The block moves on to D, where it stops. The initial compression of the spring is closest to

• A) 2.7 cm.
• B) 1.4 cm.
• C) 0.96 cm.
• D) 5.3 cm.
• E) 3.6 cm.

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Definitions:

Infants' Cries

Vocalizations made by babies as a primary means of communication to signal a need or discomfort.

Shorter Durations

Referring to brief periods of time, often in the context of tasks, events, or attention spans.

Overprotective

Describing behavior that is excessively protective, potentially smothering or hindering development due to a lack of exposure to risk.

Self-Reliance

The reliance on one's own powers, resources, or efforts, often emphasizing independence and personal responsibility.