A child is pulling a red wagon full of toys (total mass is 9.50 kg). His pull is 35 N in magnitude and at 23 degrees above the horizontal. He pulls his wagon at a constant speed. What is the coefficient of friction between the wagon's wheels and the ground?

A block weighing mA = 10 kg is placed on a plane with slope angle 30.0 degrees and is connected to a hanging weight of mass mB by a cord passing over a small frictionless pulley as shown in the picture. The coefficient of static friction is 0.42, and the coefficient of kinetic friction is 0.30. If the two blocks are moving, what is the force of friction?

A block with a mass of 7.15 kg is on a horizontal surface that has friction. A string is pulling horizontally on the block with a force of 30.6 N at an angle of 15.2° above horizontal. The block is movingalong the surface  at a constant speed of 4.39 m/s. What is the magnitude of the kinetic frictional force that is acting on the block?

A student of mass 61.4 kg, starting at rest, slides down a slide 19.2 m long, tilted at an angle of 26.10 with respect to the horizontal. If the coefficient of kinetic friction between the student and the slide is 0.118, find the force of kinetic friction, the acceleration, and the speed she is traveling when she reaches the bottom of the slide. (Enter the magnitudes.) HINT (a) the force of kinetic friction (in N) N (b) the acceleration (in m/s) m/s2 (c) the speed she is traveling (in m/s) m/s

You are pushing a wooden crate against a rubber floor. The two surfaces have a static coefficient of friction of 0.45 and a kinetic coefficient of friction of 0.38. The floor is horizontal, and the crate has a mass of 25.0 kg, and is initially at rest. You are pushing with a horizontal force of 155 N. What is the magnitude of the force of friction in this case? Give your answer in units of N, to three significant figures.

A football coach sits on a sled while two of his players build their strength by dragging the sled across the field with ropes. The friction force on the sled is 1400 N and the angle between the two ropes is 50 ●. Assume both players pull with the same force. How hard must each player pull to drag the coach at a steady 2.0 m/s?

You managed to pull a heavy crate up a ramp on a truck. The crate has mass 45 kg. You were pulling with 478 N of force along the ramp while the ramp made an angle of theta=25.5 degrees with the horizontal. The coefficient of kinetic friction between the crate and the ramp is 0.47. What is the acceleration of the crate along the ramp?

You are pulling your luggage in an air port for an international flight. You know not to pack too much else they charge you extra fees so you weighted your luggage at home to be 21.6 kg. You exert a pull of 49 N in magnitude and at 22 degrees above the horizontal to ensure you can walk at a constant speed on the carpeted floor. What is the coefficient of friction between the caster wheels and the carpet?

A child is pulling a red wagon full of toys (total mass is 8.75 kg). His pull is 36 N in magnitude and at 23 degrees above the horizontal. He pulls his wagon at a constant acceleration (could be positive or negative). The coefficient of friction between the wagon's wheels and the ground is 0.35. What is the wagon's acceleration?

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 µs = 0.603, and the kinetic friction coefficient is = 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: N If this rope tension is maintained after the sled starts moving, what is the sled's acceleration? acceleration: m/s2