⇦ | ⇨ |
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: - A particle with total energy E is moving in a potential energy region U(x)
- If the focal length of objective lens is increased, then magnifying power of
- If the alternating current I=I₁ cosωt+I₂ sinωt, then the rms current is given by
- The ratio of minimum wavelengths of Lyman and Balmer series will be
- A 220 volts input is supplied to a transformer. The output circuit draws
Topics: Motion in Plane
(93)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A particle with total energy E is moving in a potential energy region U(x)
- If the focal length of objective lens is increased, then magnifying power of
- If the alternating current I=I₁ cosωt+I₂ sinωt, then the rms current is given by
- The ratio of minimum wavelengths of Lyman and Balmer series will be
- A 220 volts input is supplied to a transformer. The output circuit draws
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