Practice portal › JEE › Work, Energy and Power

Conservation of Mechanical Energy for JEE: 15 solved questions

Real JEE paper questions on conservation of mechanical energy, part of work, energy and power. Each opens with the options, the correct answer and a step-by-step solution. Papers run from 2002 to 2026. No sign-in needed to read them.

What this topic asks

• Energy conservation on tracks and inclines — 15 questions

All 15 questions with solutions

• An object is projected with kinetic energy K from a point A at an angle 60° with the horizontal. The ratio of… JEE Main 23rd Jan 1st Shift 2026
• A particle is released from height S above the surface of the earth. At certain height its kinetic energy is… JEE Main 3rd April 1st Shift 2025
• A ball of mass 100 g is projected with velocity 20 m/s at 60° with horizontal. The decrease in kinetic energy… JEE Main 22nd Jan 2nd Shift 2025
• A ball having kinetic energy KE, is projected at an angle of 60° from the horizontal. What will be the kineti… JEE Main 23rd Jan 2nd Shift 2025
• If a rubber ball falls from a height h and rebounds upto the height of h/2. The percentage loss of total ener… JEE Main 4th April 1st Shift 2024
• A particle is placed at the point A of a frictionless track ABC as shown in figure. It is gently pushed towar… JEE Main 30th Jan 1st Shift 2024
• A ball is thrown up vertically with a certain velocity so that, it reaches a maximum height h. Find the ratio… JEE Main 29th July 1st Shift 2022
• An object is thrown vertically upwards. At its maximum height, which of the following quantity becomes zero? JEE Main 26th June 1st Shift 2022
• In the given figure, the block of mass m is dropped from the point 'A'. The expression for kinetic energy of… JEE Main 29th June 2nd Shift 2022
• A wedge of mass M=4m lies on a frictionless plane. A particle of mass m approaches the wedge with speed v. Th… JEE Main 9th April 2nd Shift 2019
• A small ball of mass m starts at a point A with speed v₀ and moves along a frictionless track AB as shown. Th… JEE Main Online 2014
• A particle is projected at 60° to the horizontal with a kinetic energy K. The kinetic energy at the highest p… AIEEE 2007
• A ball whose kinetic energy is E, is projected at an angle of 45° to the horizontal. The kinetic energy of th… AIEEE 2002
• A small block slides down from the top of hemisphere of radius R=3 m as shown in the figure. The height 'h' a… JEE Main 27th July 2nd Shift 2021
• As shown in the figure, a particle of mass 10 kg is placed at a point A. When the particle is slightly displa… JEE Main 18th March 1st Shift 2021