A box of mass 20 kg moves up a rough plane which is inclined to the horizontal at 25.0o .It is pulled by a horizontal force F of magnitude 250N . The Coefficient of kinetic friction between thr box and the plane is 0.300 a) if the box travels 3.80 m along the plane determine i. The work done on the box by the force F ii. The work done on the box by gravitational force iii. The work done on the box by reaction force and the work done on the box by frictional force v. total work done on the box b) If the speed of box is zero at bottom plane ,calculate it speed when it travellef 3.80 m (given g=9.81m/s2)

A box of mass 20 kg moves up a rough plane which is inclined to the horizontal at 25.0o .It is pulled by a horizontal force F of magnitude 250N . The Coefficient of kinetic friction between thr box and the plane is 0.300 a) if the box travels 3.80 m along the plane determine i. The work done on the box by the force F ii. The work done on the box by gravitational force iii. The work done on the box by reaction force and the work done on the box by frictional force v. total work done on the box b) If the speed of box is zero at bottom plane ,calculate it speed when it travellef 3.80 m (given g=9.81m/s2)

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.3P: Two identical chairs, each weighing 14 lb, are stacked as shown. The center of gravity of each chair...

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Forming and Shaping

Metal forming is a category of metalworking process through which the material can be given the desired shape and size by subjecting it to plastic deformation, where the component undergoes bulk deformation process upon application of loads. Unlike the shearing and machining process, the material does not undergo up to a failure point as indicated in the stress-strain curve. Hence, the stresses induced during the forming process are greater than yield strength but less than the failure strength of the material. The process does not lead to the loss of material, so it can be said to be an economical process. During forming, the material is subjected to tensile forces, compressive forces, bending, and shearing loading conditions. The material should possess the property of ductility to undergo the forming process.

Question

A box of mass 20 kg moves up a rough plane which is inclined to the horizontal at 25.0^o.It is pulled by a horizontal force F of magnitude 250N . The Coefficient of kinetic friction between thr box and the plane is 0.300

a) if the box travels 3.80 m along the plane determine

i. The work done on the box by the force F

ii. The work done on the box by gravitational force

iii. The work done on the box by reaction force and the work done on the box by frictional force

v. total work done on the box

b) If the speed of box is zero at bottom plane ,calculate it speed when it travellef 3.80 m

(given g=9.81m/s²)

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