12.4 Determine the acceleration of the cylinder A in each of the three cases illus trated. 110 kg B A 90 kg 200 Ib 100 200 lb 100 lb 1200 1100 Ib Ib lb (a) (b) (6)
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Dynamics Question 12.4
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- Text When replacing the fluid in a car's brake system, any air in the lines must be drained out. a) Given that a brake system is designed to transmit force over a distance, what property does the air have that the brake fluid does not have, which might affect the system's performance? Text b) Why is it important to remove all the air in the lines? Text c) Why would the opposite not matter as much (a drop of liquid in a pneumatic system)? TextThe blade on a snowplow turns the wet snow through an angle of 120∘ but off to one side at 30∘. If the snow has a density of 500 kg/m3, what power is needed to move the blade at 40 mi/h if it scoops snow that is 15-cm deep and 3-m wide? a. 735 hp b. 746 hp c. 766 hp d. 750 hppice after the collision. 11. A 195-g ball traveling 4.50 m/s to the right collides with a 125-g ball traveling 12.0 m/s to the left. After the collision, the heavier ball is traveling 8.40 m/s to the left. What is the velocity of the lighter ball after the collision? A=Iva WORK W=
- A water balloon is thrown to you and you "give" with the catch. What is reduced during the collision by "giving" with the catch? the forces exerted on the balloon the impulse imparted to the balloon the time of the collision change in momentum of the balloonplease help me, double and TRIPle ChECK your answersA 700-g wooden block is resting on a frictionless surface when a 50-g bullet traveling at 150 m/s hits it. The bullet is lodged into the wood upon collision and they slide along the surface as a single body. How fast did they slide if we disregard air resistance? A) 10 m/s B) 5.0 m/s C) 7.5 m/s D) 2.5 m/s
- Review I Constants I Periodic Table A ledge on a building is 16 m above the ground. A taut rope attached to a 4.0-kg can of paint sitting on the ledge passes up over a pulley and straight down to a 3.0-kg can of nails on the ground. Part A If the can of paint is accidentally knocked off the ledge, what time interval does a carpenter have to catch the can of paint before it smashes on the ground? Express your answer with the appropriate units. E Value Units At = Request Answer Submit Provide Feedback Next>Question 73 part a18 A ball of modeling clay is dropped on the floor. Is the collision of the ball likely elastic or inelastic? Elastic Inelastic
- Constants I Periodic Table A 900 kg car is at the top of a 32 m -long, 2.5 incline. Its parking brake fails and it starts rolling down the hill. Halfway down, it strikes and sticks to a 1130 kg parked car. Part A lgnoring friction, what's the speed of the joined cars at the bottom of the incline? Express your answer to two significant figures and include the appropriate units. Value Units Request Answer Submit Part B What the first car's speed would have been at the bottom had it not struck the second car. Express your answer to two significant figures and include the appropriate units. ?aquarium activity- small and large hollow ball in water- At this point, you should be able to list two factors that control the amount of hand force required to submerge a ball. What are those two factors? In each answer, describe the effect of each factor (Example: The more the more Hand Force)QUESTION 9 Water comes down the spillway of a dam from an initial vertical height of h=144 m. What is the highest possible speed of the water at the end of the spillway? Assume g = 9.81 m/s² h