4 ms·
E = mc^2 implies that mass (m) is being converted to energy (E), and a windup toy car is definitely not converting mass to energy. Windup cars get their energy
by prewett 5y ago
E = mc^2 implies that mass (m) is being converted to energy (E), and a windup toy car is definitely not converting mass to energy. Windup cars get their energy from torsional springs, which are E = (1/2) k theta^2.
- whatshisface 5y ago>and a windup toy car is definitely not converting mass to energy Ah, but it is. E=mc^2 is always true in the reference frame where the object is stationary. (We assume that we are co-moving with the windup car.) A spring under torsion is heavier than an unwound spring.
- Chris2048 5y ago> A spring under torsion is heavier than an unwound spring Does it have more (invariant) mass?
- whatshisface 5y agoYes.