Chapter_8__Student_Problems

# Chapter_8__Student_Problems - Problem 8-? In Figure 8-32, a...

This preview shows pages 1–4. Sign up to view the full content.

Problem 8-? In Figure 8-32, a frictionless roller coaster car of mass m = 825 kg tops the first hill with speed v 0 = 17.0 m/s at height h = 42.0 m. What is its speed at points A, B, and C? v A = 17.0 m/s v B = 26.0 m/s v C = 33.4 m/s

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Problem 8-23 23 The string in Figure 8-38 is L = 120 cm long, has a ball attached to one end, and is fixed at its other end. The distance d from the fixed end to a fixed peg at point P is 75.0 cm. When the initially stationary ball is released with the string horizontal as shown, it will swing along the dashed arc. What is its speed when it reaches (a) its lowest point and (b) its highest point after the string catches on the peg? v A v B v A = 4.85 m/s v B = 2.42 m/s
Problem 8-25 ••25 A 60 kg skier starts from rest at height H = 20 m above the end of a ski-jump ramp (Figure 8-39). As the skier leaves the ramp, his velocity makes an angle of θ = 28° with the horizontal. Neglect the effects of air resistance and assume the ramp is frictionless. (a) What

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 02/21/2009 for the course PHY 3425345 taught by Professor Dr.schrieber during the Spring '08 term at TCNJ.

### Page1 / 5

Chapter_8__Student_Problems - Problem 8-? In Figure 8-32, a...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online