A crane is lowering a 1000 kg scaffolding with a constant velocity. What is the net force acting on the scaffolding?
A crane is lowering a 1000 kg scaffolding with a constant velocity. What is the net...
An automobile with a mass of 1000 kg is moving north on a level highway with a constant velocity of 80 km/h. What is the net force acting on the automobile?
A winch is lowering a mass M = 82.3 kg down a = 17.8° incline at 3.67 m/s as indicated in the drawing. The force F provided by the cable from the winch is acting parallel to the surface of the incline. There is a coefficient of kinetic friction of : = 0.209 between M and the surface. (A) Draw the free-body diagram for M, being careful to show all forces in terms of their components. (B) Calculate the...
A boy rides a bicycle at a constant velocity. Which of the following about the net force is true? A. There is a net force acting in the velocity direction B. There is a net force acting opposite to the velocity direction C. The net force is zero D. There is a net force acting perpendicularly to the velocity direction E. None from the above The Daily Post First with the News A passenger standing in a moving bus, facing...
A shopper pushes a 16.0 kg shopping cart at a constant velocity for a distance of 26.0 m. She pushes with a force P downward at an angle of 24.0°below the horizontal. A 440 N frictional force opposes the motion of the cart. (15 points) (a) Draw a FBD and label each of the forces acting on the shopping cart, including the components o the pushing force P the shopper exerts. (b) Determine the magnitude of the pushing force P...
3- A 45 kg crate is dragged at constant velocity 8.2 m across a horizontal floor due to an horizontal force F = 100 N. If the coefficient of kinetic is 0.25. Find: a. The work done for each force acting on the crate. b. The total work done on the crate
2. An objec t is moving along a level surface with a constant velocity. The net force acting upon the object a. in the direction of motion b. opposite the direction of motion c. zero d.... none of these can be determined without further information. -9
A constant 12.0-N net force acts for 3.0 s on a 3.0-kg object. What is the object's change of velocity? 12 m/s 4 m/s 3 m/s 5 m/s
At a building site, a 1000 kg container hangs from a crane cable and is then placed on the floor so that the cable is unloaded. The container is pushed to an elevator shaft, where it is to be lowered by the crane. By mistake, there is a 1-m slack in the cable from the crane when the container is pushed into the elevator shaft. Calculate the maximum stress in the cable if the cable has a cross-sectional area of...
A 2 kg box is sliding down a ramp with a constant velocity of 0.7 m/s. What is the net force on the box? 10 N 1.4 N 20 N 0 N
A storeho use worker pushes a box with a refrigerator (mass:96.0-kg) at constant velocity for a distance of 11.0 m. He pushes in the direction parallel to the horizontal floor. A 250.0-N frictional force opposes the motion of the box. Use Newtons second law and definition of work to answer the questions below. (a) (1 point) What is the acceleration of the box? as (b) (2 points) What is the net force, acting on the box? Write down Newtons second...