| ⇦ | 
| ⇨ |
The equations of motion of a projectile are given by x=36 t metre and 2y=96t-9.8t² metre. The angle of projection is
Options
(a) sin⁻¹ (4/5)
(b) sin⁻¹ (3/5)
(c) sin⁻¹ (4/3)
(d) sin⁻¹ (3/4)
Correct Answer:
sin⁻¹ (4/5)
Explanation:
x = 36t ⇒ dx/dt = 36
.·. vₓ = 36 m/s and 2y = 96t – 9.8t²
⇒ y = 48t – 9.8 t² ⇒ dy/dt = 48 – 9.8t
.·. vᵧ = 48 – 9.8t
At t = 0
⇒ vᵧ = 48
.·. tan θ = vᵧ / vₓ = 48 / 36 = 4 / 3
⇒ sin θ = 4/5 ⇒ θ = sin⁻¹ (4/5)
Related Questions: - To measure the roughness of the surface of a material, which of the following microscope
- The escape velocity of a body from earth’s surface is Ve. The escape velocity
- The intensity of magnetisation of a bar magnet is 5×10⁴ Am⁻¹. The magnetic length
- If two bodies are projected at 30⁰ and 60⁰ respectively with the same velocity, then
- A point performs simple harmonic oscillation of period T and the equation of motion
Topics: Motion in Plane
(93)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- To measure the roughness of the surface of a material, which of the following microscope
- The escape velocity of a body from earth’s surface is Ve. The escape velocity
- The intensity of magnetisation of a bar magnet is 5×10⁴ Am⁻¹. The magnetic length
- If two bodies are projected at 30⁰ and 60⁰ respectively with the same velocity, then
- A point performs simple harmonic oscillation of period T and the equation of motion
Topics: Motion in Plane (93)
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