Questions
A body projected obliquely with velocity 19.6 m/s has its kinetic energy at the maximum height equal to 3 times its potential energy there. Its position after 1second of projection from the ground is (h = maximum height)
detailed solution
Correct option is D
KEat maximum height =3 PEat maximum height12mu2Cos2θ=3mgu2Sin2θ2gCos2θ=3Sin2θ hence θ=300y=uSinθt-12gt2 y=19.612×1-129.812=4.9 mh=u2Sin2θ2g=19.622×9.8×14=4.9mso y=hTalk to our academic expert!
Similar Questions
A rectangular plank of mass 'm1' and height 'a' is on a horizontal surface. On the top of it another rectangular plank of mass 'm2' and height 'b' is placed. The potential energy of the system is,
799 666 8865
support@infinitylearn.com
6th Floor, NCC Building, Durgamma Cheruvu Road, Vittal Rao Nagar, HITEC City, Hyderabad, Telangana 500081.
free study material
JEE Mock Tests
JEE study guide
JEE Revision Notes
JEE Important Questions
JEE Sample Papers
JEE Previous Year's Papers
NEET previous year’s papers
NEET important questions
NEET sample papers
NEET revision notes
NEET study guide
NEET mock tests
