Q70 (NDA-I/2026) Science & Technology › Basic Science (Physics, Chemistry, Biology)

What is the upward force acting on a skydiver of mass 60 kg who is falling at a uniform speed of 2 m/s?

Result

Your answer: — · Correct: C

Explanation

When an object falls at a uniform speed (constant velocity), its acceleration is zero. According to Newton's Second Law (F = ma), if acceleration is zero, the net force acting on the object must be zero. This state is known as dynamic equilibrium.

Two main forces act on the skydiver: the downward force of gravity (weight) and the upward force of air resistance (drag). For the net force to be zero, the upward force must equal the downward force (Weight).
Weight (W) = mass (m) × acceleration due to gravity (g)
W = 60 kg × 9.8 m/s2 = 588 N.

Since the skydiver is moving at a constant speed, the upward force (drag) exactly balances the weight, resulting in 588 N. Option A is incorrect as it represents the net force, not the specific upward force.

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What is the upward force acting on a skydiver of mass 60 kg who is falling at a uniform speed of 2 m/s?

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SIMILAR QUESTIONS

Which one of the following statements is not true?

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The figure given below shows the direction of the two forces P and Q acting on a skydiver : Which one among the following statements is correct about the two forces ?