Taylor is building a ramp for a delivery company. The property has limited space available for the ramp, so he must make it as short as possible. The ramp must allow a worker to push a 875N carton up it, with the ramp reaching a height of 1.15m to meet the loading dock platform. The force exerted will be 205 N. What is the length of the ramp?
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Q: Question 3
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- a student is skateboarding down a ramp that is 5.82 m long and inclined at 24.1% with respect to the horizontal. the initial speed of the skateboarder at the top of the ramp is 3.75 m/s. neglect friction and find the speed at the bottom of the ramp.A 15 kg box is pulled with an applied force of 40 N with a rope at an angle of 40 degrees above the horizontal with a constant velocity. The box is pulled 10.0 m over a time of 5.0 seconds. Determine the power of the person pulling the box.You are using a modified block and tackle pulley system to lift a concrete block. You need to lift the concrete block (mass=200kg) a distance of 5 meters upward. The system is designed to reduce the force loaded by a factor of 4. How much rope must you pull down on the other side of the pulley to lift the block the proper distance?
- Problem 1: A 2.80kg block is placed on a rough (us=0.540) incline that makes an angle of 52.0° with respect to the horizontal. A pushing force horizontal to the ground is applied to the top of the block (This would make the force have an angle of 52.0° below the surface of the inclined plane, up the plane) to make the block stationary on the plane. What is the minimum pushing force needed to keep the block stationary on the plane? (10 points)Work done by gravitySometimes, steep roads going down have a small safety road by the side that goes up, which vehicules can use in an emergency, to slow down. A 3362.6 kg truck has lost its brakes coming down a mountain. Fortunately, there is a ramp of thick gravel inclined at 14 degrees that the driver can use to stop the truck. The truck hits the ramp moving at 20.58 m/s and then travels 35.6 meters up the ramp before it comes to a stop. What work is done by the gravel to stop the truck?
- Two identical springs, A and B, each with spring constant k = 30.7 N/m, support an object with a weight W = 15 N. Each spring makes an angle of θ = 34.8 degrees to vertical, as shown in the diagram. (a) Write an expression for the tension in spring A (which is equal to the tension in spring B) in terms of W and θ. (b) By how much is spring A stretched, in meters?Due to a jaw injury, a patient must wear a strap that produces a net upward force of 5.00 N on his chin. The tension is the same throughout the strap. To what tension must the strap be adjusted to provide the necessary upward force?. A 25kg wooden plate is held in place by two strings attached to the ceiling and the wall. The string attached to the ceiling makes an angle 40° with the horizontal and the string attached to the wall makes 90° with the wall. Determine the force in each string.
- While walking on water, an arctic wind freezes the water beneath your feet and you now find yourself stuck in the middle of a 15m diameter lake on top of a frictionless layer of ice. Unable to just walk off, you decide to push off your physics book with a force of 80.0N for 0.1s. How long in minutes will it take you to reach the shore if your mass is 75kg?A small boat is being pushed up a ramp into the back of a flatbed truck. The boat is sitting at the top of the ramp, which is located 1.4 m above the ground. The boaters think the boat is safe there, and begin to walkaway. However, they have neglected the thin layer of ice that has formed on the ramp, which is angled at 30◦ up from the ground. Neglecting the friction between the boat and the ramp, how long do the boaters havebefore the boat reaches the bottom of the ramp?Antman must supply a force of 8.25x10-3N to a small computer chip to lower it at a constant velocity over a distance of 11.5cm down a slope into a waiting circuit board. If the computer chip has a mass of 5.50g and the slope makes an angle of 23.0° with respect to the horizontal. What is the coefficient of kinetic friction between the computer chip and the slope?