Situation 1: A 50 N block rests on a surface that is inclined by e degrees. If Hs = 0.35 and uk = 0.15, determine the following: A. The maximum e where the motion impends (degrees) B. If e = 15°, what is the frictional force between the block and the incline? (N) C. If e = 25°, what is the frictional force between the block and the incline? (N)
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- A woman exerts a horizontal force of 119 N on a box with a mass of 39.2 kg. If the box doesn't move, what's the magnitude of the static friction force (in N)? What is the minimum possible value of the coefficient of static friction between the box and the floor? (Assume the box remains stationary.)A loaded penguin sled weighing 75.0 N rests on a plane inclined at angle θ = 17.0° to the horizontal (see the figure). Between the sled and the plane, the coefficient of static friction is 0.290, and the coefficient of kinetic friction is 0.160. (a) What is the minimum magnitude of the force F→, parallel to the plane, that will prevent the sled from slipping down the plane? (b) What is the minimum magnitude F that will start the sled moving up the plane? (c) What value of F is required to move the sled up the plane at constant velocity?A small block with mass 0.327 kg is sliding down a frictionless ramp that is inclined at an angle of 53.1° above the horizontal. Assume g = 9.80 m/s2. (a) As the object slides down the incline, what is the magnitude of the normal force that the surface of the incline exerts on the block?(b) As the object slides down the incline, what is the magnitude of the component of the gravity force parallel to the surface of the incline?
- A loaded penguin sled weighing 87.0 N rests on a plane inclined at angle θ = 24.0° to the horizontal (see the figure). Between the sled and the plane, the coefficient of static friction is 0.230, and the coefficient of kinetic friction is 0.200. (a) What is the minimum magnitude of the force F→, parallel to the plane, that will prevent the sled from slipping down the plane? (b) What is the minimum magnitude F that will start the sled moving up the plane? (c) What value of F is required to move the sled up the plane at constant velocity? (a) Number Enter your answer for part (a) in accordance to the question statement Units Choose the answer for part (a) from the menu in accordance to the question statement This answer has no units° (degrees)mkgsm/sm/s^2NJWN/mkg·m/s or N·sN/m^2 or Pakg/m^3gm/s^3times (b) Number Enter your answer for part (b) in accordance to the question statement Units Choose the answer for part…A man exerts a horizontal force of 125 N on a crate with amass of 30.0 kg. (a) If the crate doesn’t move, what’s the magnitudeof the static friction force? (b) What is the minimumpossible value of the coefficient of static friction between thecrate and the floor?A block weighs 100. N and rests on a horizontal surface. If Ms = 0.50 and uk = 0.20 between the block and the horizontal surface, then (a) What is the magnitude of the frictional force acting on the block? Justify your What is the magnitude of the frictional force acting on the block if a horizontal force of 35.0 N is now used to push the block? Justify your answer with a calculation. What is the magnitude of the minimum horizontally applied force that will start the block sliding? Justify your answer with a calculation. If the magnitude of the applied horizontal force on the block is 55.0 N, what is the magnitude of the frictional force acting on the block? Justify your answer with a calculation.
- A bedroom bureau with a mass of 42 kg, including drawers and clothing, rests on the floor. (a) If the coefficient of static friction between the bureau and the floor is 0.59, what is the magnitude of the minimum horizontal force that a person must apply to start the bureau moving? (b) If the drawers and clothing, with 17 kg mass, are removed before the bureau is pushed, what is the new minimum magnitude?A loaded penguin sled weighing 71.0 N rests on a plane inclined at angle θ = 19.0° to the horizontal (see the figure). Between the sled and the plane, the coefficient of static friction is 0.250, and the coefficient of kinetic friction is 0.160. (a) What is the minimum magnitude of the force ? parallel to the plane, that will prevent the sled from slipping down the plane? (b) What is the minimum magnitude F that will start the sled moving up the plane? (c) What value of F is required to move the sled up the plane at constant velocity?A painter stands on a horizontal uniform scaffold hung by its end from two vertical ropes A and B, 6 meters apart. The scaffold weighs 200 N. The tension on A is 750 N and that in B is 250 N. a) What is the weight of the painter? b) How far from A is he standing? Include Fbd, Formula and Given
- a. If W1 = 2N and W2 = 1.5 N, what is the coefficient of static friction? b. If the coefficient of static friction between the carrier and the platform is 0.55, what is W2 if W1 is 9N?A 9.3-kg box slides across the floor of an elevator with a coefficient of kinetic friction equal to 0.38. (a) What isthe force of kinetic friction acting on the box when the elevator is atrest? (b) If the elevator moves upward with constant acceleration, isthe force of kinetic friction acting on the box greater than, less than,or equal to the value found in part (a)? Explain. (c) Determine theforce of kinetic friction acting on the sliding box when the elevatormoves upward with a constant acceleration of 1.4 m>s2A block weighing 80N rests on a plane inclined at 20o to the horizontal. The coefficient of static friction is 0.25, while the coefficient of kinetic friction is 0.15. a) What is the minimum force |F|, parallel to the plane, that will prevent the block slipping down the plane? b) What is the minimum force |F| that will start the block moving up the plane? c) What force |F| is required to move the block up the plane at constant speed?