a crate of mass 27 kg is pushed up a ramp by a person as shown in the figure below. the person pushes the crate a distance of 17 m as measured along the ramp. assume the crate moves at constant velocity. assume the coefficient of kinetic friction between the crate and the ramp is μk = 0.47. what is the work done by the person as he pushes the crate up the ramp?
? J
W = F * d
F = Weight of the crate + friction
W = m*g*16
W = (27*sin 30 *9.8 + 0.47)17
W = 2257.09 Nm
A crate of mass 40 kg is pushed up a ramp by a person as shown in the figure below. The person pushes the crate a distance of 30 m as measured along the ramp. Assume the crate moves at constant velocity. Assume the coefficient of kinetic friction between the crate and the ramp is μK = 0.30. Find the work done by gravity on the crate.
You push a crate of mass 27 kg 15 m up a ramp that is sloped 19° above the horizontal. The coefficient of kinetic friction between the ramp and the crate is 0.15, and the speed of the crate, which starts from rest, is 1.7 m/s at the end of the 15 m. To accomplish the task, you apply a variable force directed along the ramp. (a) Calculate the change in the crate’s gravitational potential energy (crate–Earth system). (b) Calculate...
An 85.0-kg man who pushes a crate 4.2 m up along a ramp that makes and angle of 21° with the horizontal. He exerts a force of 500 N on the crate parallel to the ramp and moves at a constant speed. a) Calculate the work done by the man on the crate. b) Calculate the work done by the man on himself.
A factory worker pushes a 29.3 kg crate a distance of 4.1 m along a level floor at constant velocity by pushing downward at an angle of 28 ∘ below the horizontal. The coefficient of kinetic friction between the crate and floor is 0.25. 1) What magnitude of force must the worker apply to move the crate at constant velocity? 2) How much work is done on the crate by this force when the crate is pushed a distance of...
A factory worker pushes a 28.1 kg crate a distance of 4.1 m along a level floor at constant velocity by pushing downward at an angle of 31 ∘ below the horizontal. The coefficient of kinetic friction between the crate and floor is 0.26. Part A: What magnitude of force must the worker apply to move the crate at constant velocity? Part B: How much work is done on the crate by this force when the crate is pushed a...
Just asking help with Part I A factory worker pushes a 30.0 kg crate a distance of 4.40 m along a level floor by pushing downward at an angle of 28.0° below the horizontal. The coefficient of kinetic friction between the crate and floor is 0.260. The Crate is Pushed with Increasing Speed Now assume that, instead of the previous situation, the worker pushes harder (without changing the direction of his push), so that the crate moves with increasing speed....
A factory worker pushes a 30.0 kg crate a distance of 4.5 m along a level floor at constant velocity by pushing downward at an angle of 30° below the horizontal. The coefficient of kinetic friction between the crate and floor is 0.25. Part A What magnitude of force must the worker apply to move the crate at constant velocity? Part B How much work is done on the crate by this force when the crate is pushed a distance of 4.5 m? Part C How...
Calculate the work done by an 70.0-kg man who pushes a crate 4.50 m up along a ramp that makes an angle of 24.0° with the horizontal. (See figure below.) He exerts a force of 535 N on the crate parallel to the ramp and moves at a constant speed. Be certain to include the work he does on the crate and on his body to get up the ramp 1021.2J Enviar Respuesta Incorrecto. Tries 5/50 Intentos Anteriores
A man pushing a crate of mass m = 92.0 kg at a speed of v = 0.845 m/s encounters a rough horizontal surface of length ℓ = 0.65 m as in the figure below. If the coefficient of kinetic friction between the crate and rough surface is 0.357 and he exerts a constant horizontal force of 292 N on the crate. A man pushes a crate labeled m, which moves with a velocity vector v to the right, on...
Chewbacca is pushing a 250 kg crate up a ramp, which is 26 degrees above the horizontal, into the Millenium Falcon. He managed to push the crate 11.4 m up the ramp when he spots some enemy bounty hunters. Chewbacca tries to defend himself by shooting at them and the crate starts sliding down the ramp. The coefficient of kinetic friction is 0.45. What is the work due to kinetic friction on the crate? What is the gravitational potential energy...