| ⇦ | 
| ⇨ |
The height at which the weight of a body becomes 1/16 th, its weight on the surface of earth (radius R), is
Options
(a) 5 R
(b) 15 R
(c) 3 R
(d) 4 R
Correct Answer:
3 R
Explanation:
Let at h height, the weight of a body becomes 1/16th of its weight on the surface.
Wh = 16 Ws g’ = GM/(Re+h)²
Similarly, g = GM/Re²
Now, g’/g = Re²/(Re+h)²
⇒ g’=g(1+h/R)⁻²
⇒ Wh = 16 Ws
⇒ g’ = g/16 g’
= 16g(1+h/R)⁻² 1/16
= (1+h/R)⁻²
⇒ 4 = 1+h/R
⇒ h = 3 R
Related Questions: - A bus is moving with a velocity of 5 ms⁻¹ towards a huge wall.
- A body of mass (4m) is lying in x-y plane at rest. It suddenly explodes into three
- A satellite in a circular orbit of radius R has a period of 4 hours. Another satellite
- If the half-life of a material is 10 yr, then in what time, it becomes 1/4th part
- An object placed at 20 cm in front of a concave mirror produces three times
Topics: Gravitation
(63)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A bus is moving with a velocity of 5 ms⁻¹ towards a huge wall.
- A body of mass (4m) is lying in x-y plane at rest. It suddenly explodes into three
- A satellite in a circular orbit of radius R has a period of 4 hours. Another satellite
- If the half-life of a material is 10 yr, then in what time, it becomes 1/4th part
- An object placed at 20 cm in front of a concave mirror produces three times
Topics: Gravitation (63)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply