3. A lawn mower is pushed a distance of 200 meters along a horizontal path by a constant force of 50 newtons. The handle of the lawn mower is held at an angle of 30° from the horizontal. Find the work done.

3. A lawn mower is pushed a distance of 200 meters along a horizontal path by a constant force of 50 newtons. The handle of the lawn mower is held at an angle of 30° from the horizontal. Find the work done.

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Description: KF2lloh"%3A"open"%2C"userld"%3A"118...1.Homework.2022.pdf+ 133%#Submit3. A lawn mower is pushed a distance of 200 meters along a horizontal path by a constant force of 50 newtons.The handle of the lawn mower is held at an angle of 30° from the horiz

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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I need help with part D!!
2. A cart is pulled a distance D on a flat, horizontal surface by a constant force F that actsat an angle θ with the horizontal direction. The other forces on the object during thistime are gravity (Fw), normal forces (FN1) and (FN2), and rolling frictions Fr1 and Fr2,as shown below. What is the work done by each force?
1. A 5kg block is push up a rough, inclined surface by a constant force of 20N. The surface is inclined at an angle of 15° and the force is applied completely horizontally and parallel to the ground below the incline. (Not parallel to the inclined surface). As a result, the velocity of the block increases from 0 m/s to 4 m/s in a displacement of 10m. A)What work was done by the frictional force during this displacement? B)What would have been the final velocity if friction was not present? C) Why was the final kinetic energy without friction higher than the total kinetic energy with friction?
9. A man pushes an 80-N crate up a frictionless slope that makes an angle of 30° with the horizontal. The man was able to push it to a distance of 5.0Om along the slope with a force parallel also to the slope. However the speed of the crate decreases at a rate of 1.5 m/s?. The work being done by the man is: A. -200 J В. 61J С. 140 J D. 200 J 14. A 6.0-kg block is released from rest 80 m above the ground. When it has fallen 60 m its kinetic energy is approximately: A. 4800 J В. 3500J C. 1200 J D. 120 J
Kindly answer in 30 min, i will upvote.
11. A 5kg block is pushed up a 40° incline at constant velocity of 3m/s. The force pushing on the blockacts parallel to the incline, and has a magnitude of 47.5N. (a) What is the magnitude of the normal forceacting on the block? (b) What is the magnitude of the frictional force? (c) Calculate the coefficient offriction. (d) How much work is done by the normal force? (e) How much work is done by the force offriction after 4 seconds have elapsed? (f) What is the net work done on the block?
2. Consider a particle of mass m on x-y plane. The particle is moved by a force F = xy i+y j from the origin (0,0) to a point (1, 1) along a straight line joining the two pints. Find the work done by the force.
A 32-kg block is pulled along the ground for a distance of 4.9 m by a 57 N force at an angle of 21 degrees with respect to the horizontal. The coefficient of kinetic friction is 0.21. a) Find the work done (in J) by the applied force. b) Find the work done (in J) by the normal force exerted by the ground. c) Find the work done (in J) by the force of gravity.
5. A person pulls an object of mass 40 kg as far as 20 m above a flat floor at a constant speed. The force used is directed 370 upwards horizontally. The coefficient of kinetic friction of the object with the floor is 0.20. Determine the work by the person, the work by the frictional force, and the total work on the object.
1. A jeep with mass of 2000 kg is going 18 m/s at the bottom of a hill that is 50.0m high. When it reaches the top, it is travelling at 10m/s. (a) what is the total work done by all forces (the jeep engine, the mud, gravity, etc) as it ascends the hill? (b) What is the minimum work required by engine of the jeep if only the engine and gravity are doing work (if there is na friction, forces from mud, etc)?
6. One end of a light inextensible string is attached to a block. The string is used to pull the block along a horizontal surface with a speed of 2 m s−1. The string makes an angle of 20° with the horizontal and the tension in the string is 25 N. Find the work done by the tension in a period of 8 seconds.
Several children are on a sled pulled by a four-wheeler across a level snow-covered field. The sled is moving at a constant speed of 9.25 m/s, and the tow rope (parallel to the ground) makes an angle of 35.0°, with respect to the velocity of the sled (see the figure below). a 35.0⁰ 1170 If the tension in the rope is 49.0 N, determine the work done (in J) on the sled by the tension in the rope in 10.5 s. J