A horizontal conveyor belt system has a coefficient of kinetic friction of 0.65. The motor driving the system can deliver a maximum force of 2.5 × 106 N. What maximum total weight can be placed on the conveyor system?
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- B8A car with a mass of 1020 kg is traveling in a mountainous area with a constant speed of 64.9 km/h. The road is horizontal and flat at point A, horizontal and curved at points B and C. A B IC IB The radii of curvatures at B and C are: rg = 130 m and rc = 120 m. Calculate the normal force exerted by the road on the car at point A. Submit Answer Tries 0/12 Now calculate the normal force exerted by the road on the car at point B. Submit Answer Tries 0/12 And finally calculate the normal force exerted by the road on the car at point C.During steady motion of a vehicle on a level road, the power delivered to thewheels is used to overcome aerodynamic drag and rolling resistance (the product of the rollingresistance coefficient and the weight of the vehicle), assuming that the friction at the bearingsof the wheels is negligible. Consider a car that has a total mass of 950 kg, a drag coefficient of0.32, a frontal area of 1.8 m2, and a rolling resistance coefficient of 0.04. The maximum powerthe engine can deliver to the wheels is 80 kW. Use the air density of 1.20 kg/m3.a. Determine the speed at which the rolling resistance is equal to the aerodynamic drag force.b. Determine the maximum speed of this car.
- a) For each of the weightless and frictionless pulley systems (a) to (e) in Figure Q5a: Determine the tension (T) required to lift and hold a 1450 N crate in static equilibrium for each of the pulley systems (a) to (e). Use g = 9.81 m/s2 and give your answers in newtons (N) to two decimal places. (i) Determine the ideal mechanical advantage (IMAPulley) for each of the pulley systems (a) to (e). (ii) (iii) Determine the reaction force where the pulley wheel is connected to the ceiling for each of the pulley systems (a) to (e). Use g = 9.81 m/s² and give your answers in newtons (N) to two decimal places. (a) (b) T (c) T (d) T (e) TStudents work together during an experiment about Newton’s laws. The students use a setup that consists of a cart of known mass connected to one end of a string that is looped over a pulley of negligible friction, with its other end connected to a hanging mass. The cart is initially at rest on a horizontal surface and rolls without slipping when released. The inertia of the cart's wheels is negligible. Students have access to common laboratory equipment to make measurements of components of the system. By collecting the appropriate data, the students can determine the relationship between the acceleration of the cart and the net force exerted on the cart. Which of the following graphs should the students produce to show the correct relationship? a A b C c D d BQuestion 4 please
- The figure below shows an arm that is balancing a carton of milk in the hand. The mass of the carton of milk is 1.77 kg, and in the figure is the gravitational force on the carton. The biceps muscle applies a force Fg to the forearm directed up and to the right at an angle of 75.0° from vertical. The point where F is applied to the forearm is 8.00 cm to the left of the elbow joint and 25.0 cm to the right of the center of gravity of the milk carton. (For simplicity, ignore the weight of the forearm.) B Milk N -25.0 cm- What is the magnitude of FB (in N)? 75.0⁰ 8.00 cm iA roller-coaster vehicle has a mass of 495 kg when fully loaded with passengers (see figure). 10 m 15 m² (a) If the vehicle has a speed of 19.0 m/s at point 4, what is the force (in N) of the track on the vehicle at this point? N (b) What is the maximum speed (in m/s) the vehicle can have at point in order for gravity to hold it on the track? m/sWhile installing new spark plugs in your car, the manual specifies they be tightened to 74 Nm. If you can only apply a force to the wrench 21 cm from the plug, and only at an angle of 53 degrees, What magnitude force should you apply to the wrench?