Work and Energy
Problems
PGRE1777(19, 46, 64, 66, 87)
PGRE9677()
PGRE9277(45, 66)
PGRE8677(34, 93)
PGRE0177()
Formulas
Work
$$W=Fd$$
$$W=KE_f-KE_i$$
Hook’s Law
PGRE1777((46), 66, (90))
$$F_s=-k\ d$$
Work by a Spring Force
$$W_s=\frac{1}{2}kx^2_i-\frac{1}{2}kx^2_f$$
Power
$$P=\frac{dW}{dt}$$
Potential Energy
PGRE1777((46))
$$U=mgh$$
$$F(x)=-\frac{dU(x)}{dx}$$
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