Can you help me doing these questions please ? Chapter 8. Problem 18.When a 2.00

Question

Can you help me doing these questions please ? Chapter 8. Problem 18.When a 2.00 kg block is 0.50 m directly above the end of a 160S/m spring, it is traveling downward at 3.00m/s. How far does the block compress the spring before momentarily coming to rest? Chapter 8, Problem 19. A 0.250kg mass is traveling to the right with a speed of 5.60m/s block at point A on the frictionless track shown in Figure 8.P11 What is the maximum speed of the mass? What is the maximum compression of the 100N/m spring?

Explanation / Answer

4. From conservation of energy

1/2kx^2 = mgh

x = sqrt(2*mgh/k)

x = 0.35 m = 35 cm

5.

b. 1/2 mv^2 = 1/2 kx^2

x = v*sqrt(m/k)

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