Exercise 4.12: Exercise 4.12 Constants yPar A crate with mass 28.0 kg initially at rest on...
A 46.0 kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 225 N. For the first 100 m the floor is frictionless, and for the next 10.5 m the coefficient of friction is 0.17. Part A What is the final speed of the crate after being pulled these 20.5 m ? Express your answer using two significant figures. VO ΑΣΦ ? VE m/s Submit Request Answer < Return to Assignment Provide Feedback 19
A dockworker loading crates on a ship finds that a 20-kg crate, initially at rest on a horizontal surface, requires a 73-N horizontal force to set it in motion. However, after the crate is in motion, a horizontal force of 51 N is required to keep it moving with a constant speed. Find the coefficients of static and kinetic friction between crate and floor.
Constants PartA A crate of sports equipment, with a mass of 8.40- kg, is released from rest at the top of a 1.46-m- long ramp. The ramp has small wheels on it so that the crate slides down the ramp without any friction, reaching a speed of 2.79 m/s at the bottom. What is the angle between the ramp and the horizontal? Submit Request Answer Part B What would be the speed of the crate at the bottom of the...
Constants A crate of fruit with a mass of 39.0 kg and a specific heat capacity of 3550 J/(kg · K) slides 7.70 m down a ramp inclined at an angle of 37.0 degrees below the horizontal. Part A If the crate was at rest at the top of the incline and has a speed of 2.50 m/s at the bottom, how much work Wf was done on the crate by friction? Use 9.81 m/sfor the acceleration due to gravity...
A crate whose mass is 22.5 kg is being pushed along a floor. There is an opposing horizontal force equal to 70.0 N. The pushing force is 125 N, but it is being applied at an angle of 35.0 degrees above the horizontal. The crate is initially at rest. Determine the following: a.) the acceleration of the crate b.) its velocity after 4.00s c.) its displacement after 4.00s d.) the normal contact force
A 28.0-kg block is initially at rest on a horizontal surface. A horizontal force of 73.0 N is required to set the block in motion, after which a horizontal force of 55.0 N is required to keep the block moving with constant speed. (a) Find the coefficient of static friction between the block and the surface. (b) Find the coefficient of kinetic friction between the block and the surface.
A 20.0-kg crate, starting from rest, is pulled across a floor with a constant horizontal force F. for the first 9.00 m the floor is frictionless, and for the next 12.0 m the coefficient of friction is 0.200. The final speed of the crate after being pulled these 21.0 m is 18.0 m/s. How much is the constant horizontal force F mentioned above?
A warehouse worker is pushing a 90.0 kg crate with a horizontal
force of 292 N at a speed of v = 0.875 m/s across the
warehouse floor. He encounters a rough horizontal section of the
floor that is 0.75 m long and where the coefficient of kinetic
friction between the crate and floor is 0.359.
(a)
Determine the magnitude and direction of the net force acting on
the crate while it is pushed over the rough section of the...
A warehouse worker is pushing a 90.0 kg crate with a horizontal force of 288 N at a speed of v = 0.850 m/s across the warehouse floor. He encounters a rough horizontal section of the floor that is 0.75 m long and where the coefficient of kinetic friction between the crate and floor is 0.357. (a) Determine the magnitude and direction of the net force acting on the crate while it is pushed over the rough section of the...
A warehouse worker is pushing a 90.0 kg crate with a horizontal force of 276 N at a speed of v = 0.865 m/s across the warehouse floor. He encounters section of the floor that is 0.75 m long and where the coefficient of kinetic friction between the crate and floor is 0.357. (a) Determine the magnitude and direction of the net force acting on the crate while it is pushed over the rough section of the floor. (b) Determine the net...