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Question 124Asked in DSSSB TGT Computer Science, 24 Jun 2023, Shift 3 (4:30 PM)

A body of mass 4.9 kg hangs from a spring and oscillates with a period of 0.6 sec. How much will the spring shorten when the body is removed?

  1. A0.809 metre
  2. B1.089 metre
  3. C1.009 metre
  4. D0.089 metre
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Correct answer: (D) 0.089 metre

Explanation

T = 2π√(x/g), so the extension x = gT²/4π² = 9.8 × 0.36 / 39.48 ≈ 0.089 m. The spring shortens by this amount when the mass is removed.

From DSSSB TGT Computer Science PYQ, 24 Jun 2023, Shift 3 (4:30 PM)

This is question 124 of DSSSB TGT Computer Science PYQ, 24 Jun 2023, Shift 3 (4:30 PM). See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.