Which of the following is not true about projectile motion, when height of release and landing is same?

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UGC NET Paper 2: Physcial Education 4 Dec 2019 Shift 2
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  1. Horizontal motion of a projectile is independent to its vertical motion
  2. Range of projectile will be same if an object is projected at 60° and 30° provided that velocity of release is constant
  3. Range of projectile is directly proportional to the force of gravity
  4. Range will be maximum if a shot putter put the shot at less than 45°

Answer (Detailed Solution Below)

Option 3 : Range of projectile is directly proportional to the force of gravity
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UGC NET Paper 1: Held on 21st August 2024 Shift 1
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50 Questions 100 Marks 60 Mins

Detailed Solution

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Projectile motion is the motion of an object that is thrown, launched or dropped and moves along a curved path under the influence of gravity.

Key Points

  • The range of a projectile is determined by several factors, including the initial velocity, angle of release, and height of release.
  • The force of gravity, which acts in a downward direction, affects the trajectory of the projectile, but it does not have a direct effect on the range.
  • The range of a projectile is dependent on the horizontal and vertical components of its motion, and is given by the equation R = (V0^2/g)sin(2θ), where R is the range, V0 is the initial velocity, g is the acceleration due to gravity, and θ is the angle of release.
  • Therefore, the range of a projectile is not directly proportional to the force of gravity.

Thus, the statement "Range of projectile is directly proportional to the force of gravity" is not true about projectile motion, when height of release and landing is the same.

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