A sled of mass 50 kg is pulled horizontally over flat ground. The static friction coefficient is 0.30, and the sliding friction coefficient is 0.10. (a) What does the sled weigh? (b) What minimum amount of force must be applied to the sled in order to start it moving? (c) What amount of applied force will keep it moving at a constant velocity of 3.0 m/s? (d) What amount of applied force will accelerate the sled at 3.0 m/s2?

A 40 N box is resting on a table when a 20 N force is applied to it horizontally. The coefficients of static and kinetic friction are 0.3 and 0.1, respectively. Which of the following best describes the resulting motion of the box?    The motion of the box cannot be determined with the given information.      The box accelerates in the direction of the applied force.      The box remains at rest.      The box moves with a constant velocity in the direction of the applied force.

If a mass of 3.46 kg object is attached to a string. If the force of tension in the string is 50.2 N j, what is the magnitude of the object's acceleration?

A 235 N crate rests on a ramp; the maximum angle just before it slips is 27.8° with the horizontal. What is the coefficient of static friction between crate and ramp surfaces? Answer:

This problem has been removed by your teacher and will not affect your score. A 75kg bicyclist (including the bicycle) is pedaling uphill with a speed increasing at a rate of 1.7m/s?. The bicyclist is also experiencing a 20N drag. Neglect any friction impeding her motion. How many forces are acting on the bicyclist? Are all forces on the bicyclist balanced? What is the magnitude of the net force on the bicyclist? unit 13° What is the magnitude of the normal force on the biyclist? unit How much force is she generating by pedaling? unit cam be d check answers

A tractor is speeding up at 3 m/s/s while pulling a 744 kg sled with a rope at an angle of 34 degrees. The coefficient of kinetic friction between the sled and ground is 0.5. What is the tension (Newtons) in the rope? (g=9.8 m/s2)

A man pulls a 50.0-kg block of ice with a rope over his shoulder as shown below. Suppose that he applies just enough force to get the block moving and then he continues to apply the same force. If it takes 2.00 seconds for the block to move 3.00 meters and if the coefficient of kinetic friction between the block and the surface is ?? =0.100, determine the coefficient of static friction ?? between the block and the surface. You may assume that the acceleration of the block is constant.

Mary applies a force of 78 N to push a box with an acceleration of 0.40 m/s2. When she increases the pushing force to 90 N, the box's acceleration changes to 0.66 m/s?. There is a constant friction force present between the floor and the box. (a) What is the mass of the box in kilograms? kg (b) What is the coefficient of kinetic friction between the floor and the box?

A baseball player of mass 85.0 kg travelling at an initial speed of 7.00 m/s slides along a horizontal playing field before coming to a complete stop after 1.70 s. What is the coefficient of kinetic friction between the player and the field? Answer to three decimal places .

A 55.0 kg block is pulled along a frictionless surface with a force P, exerted at an angle of 25.0 ̊ above the horizontal. What is the minimum force P that will lift the block off the ground? If the block is pulled with half of this force, what will its acceleration be?