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* Loop-the-loop You have to design a loop-the-loop for a new amusement park so that when each car passes the top of the loop inverted (upside-down), each seat exerts a force against a passenger's bottom that has a magnitude equal to 15 times the gravitational force that Earth exerts on the passenger. Choose some reasonable physical quantities so these conditions are met. Show that the loop-the-loop will work equally well for passengers of any mass.
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Chapter 5 Solutions
Pearson eText for College Physics: Explore and Apply -- Instant Access (Pearson+)
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- *Problem 4: A wooden box (20 kg) is released from rest on a 0 attached to a string which runs up the incline, over a pulley, and is attached to a hanging mass. 25° concrete incline (us = 0.75 µk 0.45). The box is a) What is the maximum hanging mass before the wooden box starts to move up the incline? (Answer: 22 kg) b) If the hanging mass were changed to 25 kg and released, what would be the acceleration of the wooden box? (Answer: 1.83 )arrow_forwardOne great form of athletic competition for bulldogs, American pit bull terriers, huskies, and many other breeds is the weight pull. Many of these dogs can pull weights two orders of magnitude greater than their own weight! Railsplitter, an American pit bull terrier, can pull a sled that has a total weight of 2215 lb along a horizontal surface. Suppose he pulls with a horizontal force of 3.50 103 N while friction is also working against the sled. If the magnitude of the net acceleration of the sled is 0.152 m/s2, find the value of the coefficient of kinetic friction, k, between the sled and the pulling surface. (The sled is normally on a set of rails.)arrow_forward* for ce of friction is I57 N A 32 kg block sits on a table. This block is attached by a string to a second block that hangs. The string runs over a pulley, as shown below. What is the maximum mass of the hanging block that will allow the 32 kg block to remain stationary? 10. 32Kgarrow_forward
- A box is projected upward onto a ramp that has a 15 degree incline. I know knows that it starts with an initial velocity of 8 m / s. The coefficient of kinetic friction between the box and the ramp is 0.12. Determine the following: a. The distance the box will travel on the ramp. b. The speed of the box when it returns to its original position.arrow_forwardA 59.0 kg skateboarder wants to just make it to the upper edge of a "quarter pipe," a track that is one-quarter of a circle with a radius of 3.00 m. (Figure 1) Figure Part A What speed does he need at the bottom? Express your answer with the appropriate units. v0 = Submit 0 μĂ Value Provide Feedback Request Answer Units ?arrow_forwardD A 100-kg pilot takes his airplane into a 1.5-km vertical loop at a speed of 300 m/s at the bottom of the loop. If his speed remains constant, determine: a) The force of the seat onto the pilot at the top of the loop b) The force of the seat onto the pilot at the bottom of the loop c) The required speed of the plane at the top of the loop if the pilot were to appear weightlessarrow_forward
- 30 ft _6 ft- 5 ft B ft The boy pulls on the rope with a force of 80 lb.arrow_forwardA education.wiley.com 4 (Chapters 6 - 7) ework 4 (Chapters 6 - 7) NWP Assessment Player UI Application Question 5 of 10 View Policies -/1 E Current Attempt in Progress Consult Conceptual Example 9 in preparation for this problem. The drawing shows a person who, starting from rest at the top of a cliff, swings down at the end of a rope, releases it, and falls into the water below. There are two paths by which the person can enter the water. Suppose he enters the water at a speed of 19.7 m/s via path 1. How fast is he moving on path 2 when he releases the rope at a height of 2.01 m above the water? Ignore the effects of air resistance. Path 2 Number i Units eTextbook and Media Attempts: 0 of 5 used Submit Answe Save for Later MacBook Air DD F10 F9 F8 888 F7 80 F6 F5 F4 F3 * & %24 7 8 9 4. P 5arrow_forwarde) Figure Q4b shows a pulley system suspended by a hook and a bolt fixed to the ceiling. The pulley system is used to lift a load (FL) of 250 N when an effort force (FE) is applied. Determine the tension force in each support rope, the effort force (FE) and reaction force (FR) necessary to lift and hold a load of 250 N. *Assume that the pulley system is weightless and frictionless. FR +3 www FE d₂ d₁ ↑ FL Figure Q4b (Illustrative and not to scale) f) Calculate the ideal mechanical advantage (IMA) for the pulley system in Figure Q4b and calculate the distance d₁ moved when distance d₂ is 1.75 m.arrow_forward
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