Ask a New Question

Question

a 4.0kg block of wood is pulled along a horizontal ground from rest and a force of 15N is required to produce acceleration of 2.0metres per second squared . what should the magnitude of the force be in order to pull the block of wood at constant speed of 5.0m/s on the same horizontal ground

A. 5N B. 7N C. 8N D. 10N
7 years ago

Answers

Damon
Ff = friction force
15 - Ff = m a = 4 * 2 = 8
so Ff = 15 - 8 = 7 Newtons friction
then no acceleration so a = 0
so
F = Ff = 7 N
7 years ago

Related Questions

A block of wood is pulled by a horizontal string across a horizontal surface at a constant velotcity... if a block of wood is pulled at constant speed on ice what would the friction be like A 2.5 wood block is pulled along a wood floor at a steady speed. A second wood block, with mass 3.5... A 50.0-kg block is being pulled up a 13 degree slope by a force of 250 N which is parallel to the sl... A block is pulled to the right across a alevel surface at a constant velocity of a horizontal force... A block of wood is pulled along a Horizontal table by a force of 33 N inclined at 30 degrees above t... A 5 kg block is being pulled on a frictionless surface by a string at an angle of 30o to the horizon... A 50-kg block is being pulled up a 30.0^ slope by force of 250N which is parallel to the slope, but...
Ask a New Question
Archives Contact Us Privacy Policy Terms of Use