Questions
A 15 g ball is shot from a spring gun whose spring has a force constant of 600 N/m. The spring is compressed by 5 cm. The greatest possible horizontal range of the ball for this compression is (g = 10 m/s2)
detailed solution
Correct option is B
For getting horizontal range, there must be some inclination of spring with ground to project ball.⇒Rmax=u2g …..(i)But K.E. acquired by ball = P.E. of spring gun ⇒12mu2=12kx2⇒u2=kx2m …..(ii)From equation (i) and (ii) Rmax=kx2mg=600×(5×10−2)215×10−3×10=10m.Similar Questions
If g is the acceleration due to gravity on the earth's surface, the gain in the potential energy of an object of mass m raised from the surface of earth to a height equal to the radius of the earth R, is
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