Total mechanical energy of a system is conserved when there are only ___________________ forces doing work on the system.
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Q42: In pole-vaulting, in addition to gravitational potential
Q43: A ball of mass 5 kg attached
Q44: When a force acts in a direction
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Q46: A spring wound clock makes use of
Q48: Other things being equal, the pole-vaulter having
Q49: If an object has a larger potential
Q50: The potential energy of a spring is
Q51: The potential energy of a spring is
Q52: The conversion of the initial potential energy
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