
.. (5 marks) A 8.25 kg box is being pushed on a horizontal rough surface with...
. (5 marks) A piano has a mass of 515 kg. If the coefficient of static friction between the piano and the wooden floor is u=0.238, how much force is required to start the piano rolling across the floor? (5 marks) A 8.25 kg box is being pushed on a horizontal rough surface with a force of 55.0N. The kinetic friction force on the box is 38.5 N. Calculate the magnitude of the box's accelera- tion.
4) The 20kg box A which is sitting on an inclined rough surface is being pushed with the force F. The orientation of force F does not change however magnitude is gradually increased. Given that coefficient of static friction is 0.8 and coefficient of kinetic friction is 0.5, determine initial acceleration of box A 5° S.
machines изть ртор 1. A box of mass 10 kg on a horizontal rough surface 19 being pushed horizontally with P = 50 N, if the coefficient of static and kinetic friction are us = 0.5 and uk = 0.33 respectively, what is the state of motion of the box? A. Not moving, impending motion B. Not moving C. Moving D. Cannot be determined
A 20.0 kg block is pushed across a rough surface with a coefficient of kinetic friction of 0.10. The pushing force is 100.0 N force and is applied at an angle of 35 degrees to the horizontal 1) what is the contact force exerted by the surface on the block? 2) what is the force of friction on the block? 3) what is the acceleration of the block?
a 20.0 kg box is pushed across a rough level floor by means of
a
A 20.0 kg box is pushed across a rough level floor by mEANS of a 5ooN FORCE IP) applied at an angle of 370 below the horizONTAL AS SHOWN. tv P=500N g=9,80 M/A² (a) Draus a free-body ---... 2oka I THTRTTITOT - diagram of the box using the point-mass model. (6) Find the magnitude of the normal contact force (n) that acts on the box....
A8 kg box is being pulled across a horizontal surface. The pulling force has a magnitude of 55 N and acts at an angle of 30° above the horizontal. The coefficient of kinetic friction between the surface and box is 0.2. What is the normal force acting on the box?
please qickly
2) A 20 kg box initially at rest is pushed 5 m along a rough, horizontal floor with a constant applied horizontal force of F = 120 N. The coefficient of kinetic friction between box and floor is 0.1, find; a) (12 p) Calculate the work done by the applied force, the gravitational force, the normal force, the friction force (Wr.W, W.,WR) b) (4 p) Find the change in kinetic energy of the box c) (4 p) Find...
A horizontal force of 150 N is used to push a 40-kg box on a rough, horizontal surface through a distance of 6 m. If the box moves at a constant speed, find: a) the work done by the 150 N force b) the work done by friction c) the coefficient of kinetic friction
A 2.0 kg block starts from rest. It is pushed across a rough
horizontal surface by a force F (magnitude of F = 8.0 N) directed
at a 40° angle as shown. The block is found to accelerate along the
surface at 2.0 m/s2.
Prove that there is a frictional force acting on the block
F-8.0 N 40° 40 2.0 kg
a mass of 7.50 kg is being pushed down a vertical rough wall by a force F=250 N at angel 30 degrees from horizontal. the kinetic coefficient of friction between wall and mass is 0.430. A. Find frictional force. B. find acceleration of mass C, if mass move along wall 3.2 Meters - find work done only by F force