(a) In Example 6.7 (Section 6.3) it was calculated that with the air track turned off, the glider travels 8.6 cm before it stops instantaneously. How large would the coefficient of static friction μ s have to be to keep the glider from springing back to the left? (b) If the coefficient of static friction between the glider and the track is μ s = 0.60, what is the maximum initial speed v 1 that the glider can be given and still remain at rest after it stops instantaneously? With the air track turned off, the coefficient of kinetic friction is μ k = 0.47.
(a) In Example 6.7 (Section 6.3) it was calculated that with the air track turned off, the glider travels 8.6 cm before it stops instantaneously. How large would the coefficient of static friction μ s have to be to keep the glider from springing back to the left? (b) If the coefficient of static friction between the glider and the track is μ s = 0.60, what is the maximum initial speed v 1 that the glider can be given and still remain at rest after it stops instantaneously? With the air track turned off, the coefficient of kinetic friction is μ k = 0.47.
(a) In Example 6.7 (Section 6.3) it was calculated that with the air track turned off, the glider travels 8.6 cm before it stops instantaneously. How large would the coefficient of static friction μs have to be to keep the glider from springing back to the left? (b) If the coefficient of static friction between the glider and the track is μs = 0.60, what is the maximum initial speed v1 that the glider can be given and still remain at rest after it stops instantaneously? With the air track turned off, the coefficient of kinetic friction is μk = 0.47.
You are the physics consultant working on an action movie set where an SUV must start from rest, accelerate along a pier, and jump over a stretch of water to land in a departing ferry. (The director assures you it will all be very exciting.) The drawing below shows the situation.
The SUV has four-wheel drive (see problem N5D.1), and the coefficients of friction between the tires and the pier’s surface are us =3/4 and uk = 1/2. Calculate the length L (as a fraction or multiple of D) of the run along the pier that you will need for the SUV to make it to the ferry. Ignore air drag.
At what initial speed should a box of mass m be thrown parallel to the surface of the inclined plane from the lower end of an inclined plane with friction making a 30 degree angle with the horizontal direction so that it can travel 3m on the inclined plane? (The kinetic coefficient of friction between the box and the surface of the inclined plane is mk = 0.02.)
A 75-kg snowboarder has an initial velocity of 5.0 m/s at the top of a 28 degree incline. After sliding down the 110-m-long incline (on which the coefficient of kinetic friction is μk= 0.17), the snowboarder has attained a velocity v. The snowboarder then slides along a flat surface (on which μk= 0.14) and comes to rest after a distance x.
Determine BOTH the snowboarder's acceleration on the incline AND his acceleration on the flat surface. Then, determine x.
Chapter 6 Solutions
University Physics with Modern Physics, Books a la Carte Edition (14th Edition)
Sears And Zemansky's University Physics With Modern Physics
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