Physics Brain Teaser
Find a formula for the force F required to pull the rope at constant speed. Assume the coefficient of kinetic friction to be M_k between all pairs of surfaces.
Physics Brain Teaser Find a formula for the force F required to pull the rope at...
. You are using a rope to pull a sled at a constant velocity across level snow, with coefficient of kinetic friction 0.050 between sled and the snow. The sled is loaded with physics books, giving a total mass of 48 kg. (a) With what force should you pull with the rope horizontal? (b) Repeat for the rope at 30 ̊above horizontal.
You pull on a large box using a rope as in (Figure 1), except the rope is at an angle of 15.0∘ below the horizontal. The weight of the box is 265 N, and the coefficient of kinetic friction between the box and the floor is 0.270. What must be the tension in the rope to make the box move at a constant velocity? What is the normal force that the floor exerts on the box?
A tension force of 155 N inclined at 35.0° above the horizontal is used to pull a 33.0 kg storage crate a distance of 4.10 m on a rough surface. If the crate moves at a constant speed, find (a) the work done by the tension force and (b) the coefficient of kinetic friction between the crate and surface. (a)the work done by the tension force (in J) J (b)the coefficient of kinetic friction between the crate and surface
A tension force of 135 N inclined at 15.0° above the horizontal is used to pull a 29.0 kg storage crate a distance of 3.60 m on a rough surface. If the crate moves at a constant speed, find (a) the work done by the tension force and (b) the coefficient of kinetic friction between the crate and surface HINT (a) the work done by the tension force (in J) X J Enter a number. (b) the coefficient of kinetic...
1. What force is necessary to pull a 20.0-kg wooden box at a constant speed over a wooden floor at a constant speed over a wooden floor by a rope that makes an angle of 30° above the horizontal? The coefficient of kinetic friction (wood on wood) is 0.30. 2. A 50-kg balikbayan box rests on a horizontal floor. You exert a gradually increasing horizontal push on it and observe that the box just begins to move when your force...
A tension force of 145 N inclined at 25.0° above the horizontal is used to pull a 39.0 kg shipping crate a distance of 3.60 m on a rough surface. If the crate moves at a constant speed, find (a) the work done by the tension force and (b) the coefficient of kinetic friction between the crate and surface. i know that a is 473.09 but i cant figure out part b.
PHYSICS HOMEWORK # 26 NEWTON'S LAWS FIRST LAW & FRICTION 24. Two masses are sitting on a horizontal surface as shown to the right. The coefficient of sliding friction between these two masses and the horizontal surface is m-0.520. A string is attached to the end of mas m,8.00 kg. This string is then looped arounda pulley and is finally attached to the left vertical surface. The pulley is attached to mass m 12.0 kg as shown and then a...
A)
You pull on a large box using a rope as in (Figure 1), except
the rope is at an angle of 15.0∘ below the horizontal. The
weight of the box is 325 N , and the coefficient of kinetic
friction between the box and the floor is 0.270. What must be the
tension in the rope to make the box move at a constant
velocity?
Express your answer with the appropriate units..
B) What is the normal force that...
You pull a your friend along in a sled (combined mass is 65 kg), by pulling the rope at an upward angle of 20 degrees with respect to the ground with enough force to keep the sled moving at a constant velocity of <3,0, 0> m/s. The coefficient of kinetic friction between the ground and the sled is 0.15. (a) Draw a force diagram for the friend/sled system. (b) Once you get to constant velocity, you pull the sled 15...
5. An adult uses a rope to pull a child on a sled across some ice. The sled has a mass of 5 kg. the child has a mass of 35 kg, and the adult has a mass of 60 kg. The sled moves with a constant velocity of 2.5 m/s. The rope makes an angle of 300 with the horizontal. The tension in the rope is 50 N. Find the coefficient of friction between the ice and the sled.