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A rope is being used to pull a mass of 10kg vertically upward. Determine the...

Physics
JAMB 2000

A rope is being used to pull a mass of 10kg vertically upward. Determine the tension in the rope if, starting from rest, the mass acquires a velocity of 4ms\(^{-1}\) in 8s [g = 10ms\(^{-2}\)]

  • A. 5N
  • B. 50N
  • C. 95N
  • D. 105N
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Correct Answer: Option D
Explanation

Tension = Force of gravity + acceleration force

= mg + ma

\(a = \frac{v - u}{t}\)

= \(\frac{4 - 0}{8}\)

= 0.5 ms\(^{-2}\)

Tension = \(10 \times 10 + 10 \times 0.5\)

= 100 + 5

= 105N


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JAMB CBT Mobile App 2024 - Free Download
WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
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WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
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