A 57.4 kg cart rests on a horizontal floor where the coefficient of static friction is 0.55. What is the minimum amount of force (in N) needed to move the cart? An object weighs 267.4N on a planet where the acceleration due to gravity is 8.1m/s². What is its weight (in N) on Earth?

A lamp hangs vertically from a cord in a descending elevator that decelerates at 1.7 m/s2. (a) If the tension in the cord is 63 N, what is the lamp's mass? (b) What is the cord's tension when the elevator ascends with an upward acceleration of 1.7 m/s2?

While two forces act on it, a particle is to move at the constant velocity = (3.58 m/s) -(-3.26 m/s). One of the forces is F1 = (1.88 N) + (-5.85 N). What is the other force? Number i + i j Units

A 853 N magician (note: this is weight, not mass) is freeing himself from some shackles while suspended above a swimming pool filled with alligators.  Two ropes are suspending the magician.  The left rope makes an angle of 42 above the horizontal and points up and to the left.  The right rope makes an angle of 78 above the horizontal and points up and to the right.  Calculate the tension in the left rope, in N. (Please answer to the fourth decimal place - i.e 10.5432)

You have devised an experiment to measure the kinetic coefficient of friction between a ramp and a mass. You place the mass on the ramp at an angle high enough that the mass starts sliding. You measure the time it takes to fall down a known distance. The time it takes to fall down the 45 degree ramp starting from a standstill is At = 0.46 sec, m=1 kg, and the distance it falls, Ax , is 0.5 m. What is µk? m Дх in At Uk

An astronaut on the moon places a package on a scale and finds its weight to be 35 N. (a) What would the weight of the package be on the earth?                      N(b) What is the mass of the package on the moon?                      kg(c) What is the package's mass on earth?                       kg

A 2.03 kg book is placed on a flat desk. Suppose the coefficient of static friction between the book and the desk is 0.482 and the coefficient of kinetic friction is 0.262. How much force is needed to keep the book moving at a constant speed once it begins moving?

Mary applies a force of 80 N to push a box with an acceleration of 0.40 m/s². When she increases the pushing force to 86 N, the box's acceleration changes to 0.63 m/s². There is a constant friction force present between the floor and the box. (a) What is the mass of the box in kilograms? 200 X Consider applying Newton's Second Law to each of the pushing forces. kg (b) What is the coefficient of kinetic friction between the floor and the box? -0.020 X What is the relation between friction force and normal force? Did you apply Newton's Second Law to motion in the vertical direction?

Mary applies a force of 77 N to push a box with an acceleration of 0.55 m/s2. When she increases the pushing force to 85 N, the box's acceleration changes to 0.71 m/s2. There is a constant friction force present between the floor and the box. (a) What the mass of the box in kilograms? kg (b) What is the coefficient of kinetic friction between the floor and the box?

In the figure here, a box of Cheerios (mass mc = 1.70 kg) and a box of Wheaties (mass mw = 2.60 kg) are accelerated across a horizontal surface by a horizontal force applied to the Cheerios box. The magnitude of the frictional force on the Cheerios box is 2.10 N, and the magnitude of the frictional force on the Wheaties box is 4.60 N. If the magnitude of F is 12.7 N, what is the magnitude of the force on the Wheaties box from the Cheerios box? Number i Unit