Questions
A particle of mass ‘m’ is kept at rest at a height 3R from the surface of earth, where ‘R’ is radius of earth and ‘M’ is mass of earth. The minimum speed with which it should be projected, so that it does not return back, is (g is acceleration due to gravity on the surface of earth)
detailed solution
Correct option is A
The minimum speed with which the particle should be projected from the surface of the earth so that it does not return back is known as escape speed and it is given byve=2GM(R+h) Here, h=3R ∴ ve=2GM(R+3R)=2GM4R=GM2R =gR2 ∵g=GMR2Talk to our academic expert!
Similar Questions
When a projectile attains the escape velocity, then on surface of planet its
799 666 8865
support@infinitylearn.com
6th Floor, NCC Building, Durgamma Cheruvu Road, Vittal Rao Nagar, HITEC City, Hyderabad, Telangana 500081.
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