In the figure, a crate of mass m = 90 kg is pushed at a constant speed up a frictionless ramp (8 = 27°) by a horizontal force F. The positive direction of an x axis is up the ramp, and the pos axis is perpendicular to the ramp. (a) What is the magnitude of F? (b) What is the magnitude of the normal force on the crate?

Four forces act on an object, given by  A = 49.3 N east,   B = 50.3 N north,   C = 76.7 N west,  and  D = 80.7 N south.  (Assume east and north are directed along the +x-axis and +y-axis, respectively.)   (a) What is the magnitude of the net force (in N) on the object? __________  N (b) What is the direction of the force? (Enter your answer in degrees counterclockwise from the +x-axis.)  ___________ ° counterclockwise from the +x-axis

A firefighter with a weight of 713 N slides down a vertical pole with an acceleration of 2.88 m/s2, directed downward. (a) What is the magnitude of the vertical force on the firefighter from the pole? (b) What is the direction (up or down) of the vertical force on the firefighter from the pole? up down (c) What is the magnitude of the vertical force on the pole from the firefighter? N (d) What is the direction of the vertical force on the pole from the firefighter? up down

Four forces act on an object, given by A = 39.3 N east, B = 38.3 N north, C = 88.7 N west, and D = 72.7 N south. (Assume east and north are directed along the +x-axis and +y-axis, respectively.) HINT (a) What is the magnitude of the net force (in N) on the object? N (b) What is the direction of the force? (Enter your answer in degrees counterclockwise from the +x-axis.) ° counterclockwise from the +x-axis

In the figure, a crate of mass m = 110 kg is pushed at a constant speed up a frictionless ramp (0 = 26°) by a horizontal force F. The positive direction of an x axis is up the ramp, and the positive direction of a y axis is perpendicular to the ramp. (a) What is the magnitude of F? (b) What is the magnitude of the normal force on the crate? (a) Number 47.798 (b) Number i 109.05 Units Units ‒‒‒‒‒ e N N m

Three forces act on a moving object. One force has a magnitude of 75.0 N and is directed due north. Another has a magnitude of 54.6 N and is directed due west. What must be (a) the magnitude and (b) the direction of the third force, such that the object continues to move with a constant velocity? Express your answer as a positive angle south of east. (a) Number i (b) Number Units Units

Four forces act on an object, given by  A = 40.3 N east,  B = 43.3 N north, C = 74.7 N west, D = 78.7 N south.  (Assume east and north are directed along the +x-axis and +y-axis,respectively.) (a) What is the magnitude of the net force (in N) on the object?   (b) What is the direction of the force? (Enter your answer in degrees counterclockwise from the +x-axis.)

Determine the force Q-> when the block moves with constant velocity. Express your answer in vector form.

In the figure, a crate of mass m = 99 kg is pushed at a constant speed up a frictionless ramp (0 = 30°) by a horizontal force . The positive direction of an x axis is up the ramp, and the positive direction of a y axis is perpendicular to the ramp. (a) What is the magnitude of F? (b) What is the magnitude of the normal force on the crate? (a) Number i (b) Number Units Units II ATTIT This answer has no units °(degrees) m kg

A crate is sitting on a horizontal surface where the coefficient of static friction is 0.60. A worker pushes horizontally on the crate, which has a mass of 45 kg. The crate does not move, and there are no other forces acting on it. Which of the following statements is true?       (a) The force of friction on the crate is mgμs.       (b) The force of friction on the crate is mgμk.       (c) The force of friction on the crate is greater than the force that the worker exerts on the crate.           (d) The force exerted on the worker by the crate is equal in magnitude to the force of friction exerted by the surface on the crate.