Two blocks A and B with mA = 1.1 kg and mB = 0.88 kg are connected by a string of negligible mass. They rest on a frictionless horizontal surface. You pull on block A with a horizontal force of 6.7 N.
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- Two blocks A and B with mA = 1.1 kg and mB = 0.88 kg are connected by a string of negligible mass. They rest on a frictionless horizontal surface. You pull on block A with a horizontal force of 6.7 NTwo blocks A and B with mA = 1.1 kg and mB = 0.88 kg are connected by a string of negligible mass. They rest on a frictionless horizontal surface. You pull on block A with a horizontal force of 6.7 N. How will the tension in the string be affected if mA is decreased?A box with a weight of 50 N rests on a horizontal surface. A person pulls horizontally on it with a force of 15 N and it does not move. To start it moving, a second person pulls vertically upward on the box. If the coefficient of static friction is 0.4, what is the smallest vertical force for which the box moves?
- A plate of cafeteria food is on a horizontal table. You push it away from you with a constant horizontal force of 14.0 N. The plate has a mass of 0.800 kg, and during the push it has an acceleration of 12.0 m/s2 in the direction you are pushing it. (a) What is the magnitude of the net external force on the plate during the push? (b) What are the magnitude and direction of the friction force that the table exerts on the plate during the push?A 4.00 kg block rests between the floor and a 3.00 kg block. The 3.00 kg block is tied to the wall by a horizontal rope. If the coefficient of static friction is 0.800 between each pair of surfaces in contact, what horizontal force F must be applied to the 4.00 kg block to make it move?The drawing shows a circus clown who weighs 920 N. The coefficient of static friction between the clown’s feet and the ground is 0.650. He pulls vertically downward on a rope that passes around three pulleys and is tied around his feet. What is the minimum pulling force that the clown must exert to yank his feet out from under himself?
- On her way to visit Grandmother, Red Riding Hood sat down to rest and placed her 1.20-kg basket of goodies beside her. A wolf came along, spotted the basket, and began to pull on the handle with a force of 6.40 N at an angle of 25° with respect to vertical. Red was not going to let go easily, so she pulled on the handle with a force of 13.5 N. If the net force on the basket is straight up, at what angle was Red Riding Hood pulling from the vertical? The whole question did not paste in on my last attempt.Three boxes are lined up so that they are touching each other on a nearly frictionless plane. Box A has a mass of ?A=19.0 kg, box B has a mass of ?B=30.5 kg, and box C has a mass of ?C=53.0 kg. An external force ?⃗ pushes on box A toward the right, and the force that box B exerts on box C has a magnitude of 194 N. Ignore friction. What is the magnitude of the acceleration ? of the boxes?On her way to visit Grandmother, Red Riding Hood sat down to rest and placed her 1.20-kg basket of goodies beside her. A wolf came along, spotted the basket, and began to pull on the handle with a force of 6.40 N at an angle of 25° with respect to vertical. Red was not going to let go easily, so she pulled on the handle with a force of 13.5 N. If the net force on the basket is straight up, at what angle was Red Riding Hood pulling from the vertical? I was given the WRONG answer this morning! The force that Red applied was 13.5N NOT 12.2 N! Use 13.5 N! I use this service primarily to check my work. If the "experts" are using the wrong values, I question if they will use the right mathematical procedures if I really have a challenge!
- On her way to visit Grandmother, Red Riding Hood sat down to rest and placed her 1.20 kg basket of goodies beside her. A wolf came along, spotted the basket, and began to pull on the handle with a force of 6.40 N at an angle of 25 degree with respect to vertical. Red was not going to let go easily, so she pulled on the handle with a force of 12.2 N. If the net force on the basket is straight up, at what angle was Red Riding Hood pulling from the vertical?A tug-of-war match happens between Team Blue and Team Red. Each of Team Blue’s members has an average mass of 76 kg and exerts an average force of 1225 N horizontally. Each of Team Red’s members has an average mass of 78 kg and exerts an average force of 1275 N horizontally. What is the tension in the section of rope between the teams?A 46 kg box is at rest on a horizontal floor. A 22 kg child sits on top of the box. A person pushes the box with a horizontal force of 90 N. The static force of friction between the box and the floor is 230 N. What is the magnitude of the net force on the box?