A 50 N force keeps a box (m=20 kg) moving across a surface at a constant...
A 50 N force keeps a box (m=20 kg) moving across a surface at a constant speed (v =3 m/s). If this force is applied for 30m, what is the change in the objects thermal energy?
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A 50 N force keeps a box (m=20 kg) moving across a surface at a
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7. (20 pts) A force of 50 N is used to move a 5 kg box 30 m across a level floor. a. How much work was done on the box?...
7. (20 pts) A force of 50 N is used to move a 5 kg box 30 m across a level floor. a. How much work was done on the box? b. If the movement takes 10 seconds, what is the average velocity of the box during the move? c. What is the average kinetic energy of the box during the move? d. What is the change in potential energy as a result of this move?
2. A crate is pushed horizontally at an angle of 20° across a rough surface as...
2. A crate is pushed horizontally at an angle of 20° across a rough surface as shown. The mass of the crate is 55 kg and the coefficient of kinetic friction M = 0.35. a) What applied force is required to keep the box moving at a constant acceleration of 3m/s2 ? b) What applied force is needed to keep the box moving at a constant speed, that is, no acceleration? (2 pts.) 3. A 60-kg skier starts from rest...
4. A constant 80-N force acts on a 5.0 kg box. The box initially is moving...
4. A constant 80-N force acts on a 5.0 kg box. The box initially is moving at 20 m/s in the direction of the force, and 3.0 s later the box is moving at 68 m/s. Determine both the work done by this force and the average power delivered by the force during the 3.0-s interval. Ans: W=11kJ, P= 3.5kW
7. (20 pts) A force of 50 N is used to move a 5 kg box...
7. (20 pts) A force of 50 N is used to move a 5 kg box 30 m across a level floor a. How much work was done on the box? b. If the movement takes 10 seconds, what is the average velo city of the box during the move? c. What is the average kinetic energy of the box during the move? d. What is the change in potential energy as a result of this move?
7. (20 pts) A force of 50 N is used to move a 5 kg box...
7. (20 pts) A force of 50 N is used to move a 5 kg box 30 m across a level floor. 2. How much work was done on the box? b. If the movement takes 10 seconds, what is the average vclocity of the box during the move c What is the average kinetic energy of the box during the move? d. What is the change in potential energy as a result of this move?
A 4 kg box is pushed 2 m across a level surface by an applied force...
A 4 kg box is pushed 2 m across a level surface by an applied force of 32 N, 0 degree. The box then slides an additional 3 m before coming to a rest. a) Determine the amount of friction. b) Determine the box's maximum speed over the 5 m distance travelled. P.S. I have the answer, but I would really appreciate an explanation as to how to get the answer. Thank you!!
A constant 74.6-N force acts on a 4.99-kg box. The box initially is moving at 15.1...
A constant 74.6-N force acts on a 4.99-kg box. The box initially is moving at 15.1 m/s in the direction of the force, and 2.93 s later the box is moving at 76.5 m/s. Determine the work (in J) done by this force. You may assume that the box experiences constant acceleration, but do not assume that only one force acts on the box.
A box with mass M is pulled across a frictionless surface with a constant force F...
A box with mass M is pulled across a frictionless surface with a constant force F as shown below. 13) What is horizontal acceleration of the box? Mg OF F/M OM F/g 14) What is the normal force on the box? Mg OF F/M ом F/g 15) After the block is accelerated for 5 s, the force stops pulling on the box. What happens? The block comes to rest. The block continues in the same direction with a constant speed....
1a . A constant force of 32.3 N pulls on a 20 kg block on a...
1a . A constant force of 32.3 N pulls on a 20 kg block on a horizontal surface. The force is directed at 30o above the horizontal. A friction force impedes the motion. If at the start of the motion the block was at rest and after 11 meters it has a velocity of 3, what is the coefficient of friction? 1b. What is the work done by the constant force when the block is moved 8 meters? 2.What constant,...
A 50-kg person was moving on a 20-kg movable platform on top of a smooth surface...
A 50-kg person was moving on a 20-kg movable platform on top of a smooth surface such as ice. A force of 70-N was applied to the platform and the platform responded instantly at 4 m/s/s. 2a Find the minimum force (magnitude and direction) that the person exerted on the platform. 2b Determine the dancer moving direction, right or left, as the platform responded instantly at 4m/s/s. Explain
7. (20 pts) A force of 50 N is used to move a 5 kg box 30 m across a level floor. a. How much work was done on the box? b. If the movement takes 10 seconds, what is the average velocity of the box during the move? c. What is the average kinetic energy of the box during the move? d. What is the change in potential energy as a result of this move?
2. A crate is pushed horizontally at an angle of 20° across a rough surface as shown. The mass of the crate is 55 kg and the coefficient of kinetic friction M = 0.35. a) What applied force is required to keep the box moving at a constant acceleration of 3m/s2 ? b) What applied force is needed to keep the box moving at a constant speed, that is, no acceleration? (2 pts.) 3. A 60-kg skier starts from rest...
7. (20 pts) A force of 50 N is used to move a 5 kg box 30 m across a level floor a. How much work was done on the box? b. If the movement takes 10 seconds, what is the average velo city of the box during the move? c. What is the average kinetic energy of the box during the move? d. What is the change in potential energy as a result of this move?
7. (20 pts) A force of 50 N is used to move a 5 kg box 30 m across a level floor. 2. How much work was done on the box? b. If the movement takes 10 seconds, what is the average vclocity of the box during the move c What is the average kinetic energy of the box during the move? d. What is the change in potential energy as a result of this move?
A box with mass M is pulled across a frictionless surface with a constant force F as shown below. 13) What is horizontal acceleration of the box? Mg OF F/M OM F/g 14) What is the normal force on the box? Mg OF F/M ом F/g 15) After the block is accelerated for 5 s, the force stops pulling on the box. What happens? The block comes to rest. The block continues in the same direction with a constant speed....
A 50-kg person was moving on a 20-kg movable platform on top of a smooth surface such as ice. A force of 70-N was applied to the platform and the platform responded instantly at 4 m/s/s. 2a Find the minimum force (magnitude and direction) that the person exerted on the platform. 2b Determine the dancer moving direction, right or left, as the platform responded instantly at 4m/s/s. Explain
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