An elevator is  pulled 4.00m upwards from rest with a rope under 13000N of tension. The weight of the elevator is 12000N What is the net force on the elevator? write Newton’s 2nd law as an equation then use it to find the acceleration of the elevator Use one of your uniform acceleration equations to find the speed of the elevator after it has gone the 4.00m  and round your answer as appropriate

A 65.0-kg file cabinet of is sliding down a rough ramp for a distance of 5.00 m as shown. The friction force on the box is 75.0 N. The cabinet starts from rest. What is the final kinetic energy of the cabinet at the end of the ramp, in Joules? Use g = 10.0 m/s2.  Your answer needs to have 3 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.

A different car accelerated from 0.12 m/s to 0.52 m/s. The acceleration of the car was 0.040 m/s². The work done to accelerate the car was 0.48 J. Calculate the resultant force needed to accelerate the car.

A cart for hauling ore out of a gold mine has a mass of 443 kg, including its load. The cart runs along a straight stretch of track that climbs a shallow 4.01° incline. Track -.Rope A Track incline Horizontal ground Find the work Wa that the donkey performs on the cart during this process. Find the work Wg that the force of gravity performs on the cart during this process. Calculate the work Wf done on the cart by friction during this process. A donkey, which is trudging along and to the side of the track, has the unenviable job of pulling the cart up the slope with a 389 N force for a distance of 157 m by means of a rope that is parallel to the slope but makes an angle of 13.5° with the track. Model the rolling resistance of the cart as though it were sliding on the track with a coefficient of friction of 0.0171. Use g = 9.81 m/s², and note that angle A in the image is the angle of the incline while angle B is the angle the rope makes with the track. Wa = J J W% = W₤ = J

Block B is stacked on top of block A and does not slide with respect to A below – the blocks move as a single unit.  The blocks slide to the right on a horizontal surface of uniform roughness while a tension force is applied to block A horizontally to the right.  The blocks move a distance d and are speeding up.  The work that B does on A is __________.   a. Zero b. The magnitude of the tension force is needed to determine whether the work is positive, negative, or zero c. The masses of the blocks are needed to determine whether the work is positive, negative, or zero d. Negative e. Positive ------------------------------------------------------------------------------------------------------------- 2   The total work on A is __________. a. Negative b. The masses of the blocks are needed to determine whether the work is positive, negative, or zero c. Zero d. The magnitude of the tension force is needed to determine whether the work is positive,…

1)A block with a mass of 44.0 kg is pushed with a horizontal force of 150 N. The block moves at a constant speed across a level, rough surface a distance of 6.65 m. Please  draw and show your free body diagrams in your answers. This will also help you to solve the problem! (a)What is the work done (in J) by the 150 N force?    (b)What is the coefficient of kinetic friction between the block and the surface?

A block of weight -300 N sits on a frictionless inclined plane, which makes an angle 31.0 with respect to the horizontal, as shown in the figure (Figure 1)A force of magnitude F-155 N appied parallel to the incine, is just sufficient to pull the block up the plane at constant speed Figure 1 of 1 Part A The block moves up an incline with constant speed. What is the total work Wal done on the block by all forces as the block moves a distance Lw3.20 m up the incline? Include only the work done after the block has started moving at constant speed, not the work needed to start the block moving from rest. Express your answer numerically in joules. View Available Hint(s) W Submit Part 8 W₁- ΠΟΙ ΑΣΦ Subm 5 What is the work done on the block by the force of gravity as the block moves a distance L3.20 m up the incline Express your answer numerically in joules. View Avaliable Hint VAX Review Constants Periodic Table J 3

Conservation of Energy When Work is Done Whiteboard Problems (Page 10):917 \ 1. A 10.0 kg block rests at the top of an incline that is 4.00 m high and 5.00 m long. A) Find the potential energy of the block when it is at the top of the incline. B) What is the speed of the block at the bottom of the incline, if it is frictionless? C) If the incline is not frictionless, and the block experiences a constant 10.0 N force of friction as it moves down the incline, find the speed of the block at the bottom.