You are dragging a toy tractor across a horizontal floor, using a horizontal force. You observe that the toy is moving at a constant speed if you pull with a force of 81 N. If the mass of the toy is 11.09 kg, what is the coefficient of friction? Your Answer: Answer

A heavy sled is being pulled by two people, as shown in the figure. The coefficient of static friction between the sled and the ground is H = 0.603, and the kinetic friction coefficient is µ = 0.403. The combined mass of the sled and its load is m = 336 kg. The ropes are separated by an angle o = 25.0°, and they make an angle 0 = 31.1° with the horizontal. Assuming both ropes pull equally hard, what is the minimum rope tension required to get the sled moving? minimum rope tension: If this rope tension is maintained after the sled starts moving, what is the sled's acceleration? m/s2 acceleration:

A block is pressed against a vertical wall by a force F, as the drawing shows. This force can either push the block upward at a constant velocity or allow it to slide downward at a constant velocity. The magnitude of the force is different in the two cases, while the directional angle is the same. Kinetic friction exists between the block and the wall, and the coefficient of kinetic friction is 0.260. The weight of the block is 47.0 N, and the directional angle for the force F is 0 = 48.0°. Determine the magnitude of F when the block slides (a) up the wall and (b) down the wall. (a) P = (b) P= i i P >

A woman exerts a horizontal force of 111 N on a box with a mass of 31.7 kg. HINT (a) If the box doesn't move, what's the magnitude of the static friction force (in N)?  N (b) What is the minimum possible value of the coefficient of static friction between the box and the floor? (Assume the box remains stationary.)

Question 16, Physics - equation sheet attached

A box is at rest on a floor. The box has a mass of 35.0 kg. A force P = 213.0 N is acting to the left at an angle = 31.5° above the horizontal as shown in the figure provided on the right. Between the box and the floor, the coefficient of static friction is Hs = 0.830 and the coefficient of kinetic friction is HK = 0.778. What is the magnitude of the normal force acting on the box? P 0 m

A woman exerts a horizontal force of 139 N on a crate with a mass of 38.7 kg. (a)If the crate doesn't move, what's the magnitude of the static friction force (in N)?N(b)What is the minimum possible value of the coefficient of static friction between the crate and the floor? (Assume the crate remains stationary.)

A 7.5 kg backpack is sliding across the floor.  The coefficient of friction between the backpack and the floor is 0.20.  Answer the following: What is the normal force between the backpack and the floor?

You are pulling a 72-kg box at a constant speed of 7.4 m/s. If you're pulling the rope with a force of 300 N at an angle of 37° measured above the horizontal, what is the coefficient of friction between the box and the ground?

A girl exerts a horizontal force of 133 N on a box with a mass of 33.2 kg.   (a) If the box doesn't move, what's the magnitude of the static friction force (in N)? N (b) What is the minimum possible value of the coefficient of static friction between the box and the floor? (Assume the box remains stationary.)