Homework conceptual questions answers week 6

# Homework conceptual questions answers week 6 - Week 6...

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Week 6: Conceptual Questions Chapter 7 Homework: #3: An object executes circular motion with a constant speed whenever a net force of constant magnitude acts perpendicular to its velocity. What happens to the speed if the force is not perpendicular to the velocity? An object can move in a circle even if the total force on it is not perpendicular to its velocity, but then its speed will change. Resolve the total force into an inward radial component and a perpendicular tangential component. If the tangential force acts in the forward direction, the object will speed up, and if the tangential force acts backward, the object will slow down. #5: If a car’s wheels are replaced with wheels of greater diameter, will the reading of eh speedometer change? Explain. The speedometer will be inaccurate. The speedometer measures the number of tire revolutions per second (and converts that into a linear velocity based upon the radius of the tire)* . Its reading will be too low. #7: Correct the following statement: “The race car rounds the turn at a

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Homework conceptual questions answers week 6 - Week 6...

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