A vertical spring with force constant k is fixed on a table. A ball of mass m at a height h above the free upper end of the spring falls vertically on the spring, so that the spring is compressed by a distance of d. The net work done in the process is
(A) mg(h+d)+12kd2
(B) mg(h+d)−12kd2
(C) mg(h−d)−12kd2
(D) mg(h−d)+12kd2
A vertical spring with force constant k is fixed on a table. A ball of mass m at a height h above the free upper end of the spring falls vertically on the spring, so that the spring is compressed by a distance of d. The net work done in the process is
(A) mg(h+d)+12kd2
(B) mg(h+d)−12kd2
(C) mg(h−d)−12kd2
(D) mg(h−d)+12kd2
Harshit Singh , 4 Years ago
Grade 12th pass
