When a parachutist is moving downward with uniform motion then its weight is:
Correct answer: C. Remain same
- A. Decreasing
- B. Increasing
- C. Remain same
- D. Zero
Explanation
Therefore, the correct answer is: c) Remain same: This option is correct. When the parachutist is moving downward with uniform motion, the force of gravity (weight) acting on the parachutist remains the same as the force of air resistance (drag) acting in the opposite direction. The two forces balance each other out, resulting in a constant velocity.
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About Simple Harmonic Motion
Simple harmonic motion is oscillation in which acceleration is directly proportional to displacement and directed toward the equilibrium position. Work includes displacement, velocity, acceleration, phase, period, frequency, amplitude and energy, with applications to springs and simple pendulums. The restoring force and the conditions for SHM distinguish it from general periodic motion.
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