A 20.00 kg block is pushed up a frictionless inclined plane that makes an angle of θ = 36 o with the horizontal direction. What force is needed to move the block with constant speed? Assume that the force is parallel to the surface of the plane.
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(c4p20) A 20.00 kg block is pushed up a frictionless inclined plane that makes an angle of θ = 36 o with the horizontal direction. What force is needed to move the block with constant speed? Assume that the force is parallel to the surface of the plane.
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- A skier starts from rest at the top of a hill that is inclined at 11.0° with respect to the horizontal. The hillside is 220 m long, and the coefficient of friction between snow and skis is 0.0750. At the bottom of the hill, the snow is level and the coefficient of friction is unchanged. How far does the skier glide along the horizontal portion of the snow before coming to rest?A man pushing a crate of mass m = 92.0 kg at a speed of v = 0.875 m/s encounters a rough horizontal surface of length ℓ = 0.65 m as in the figure below. If the coefficient of kinetic friction between the crate and rough surface is 0.350 and he exerts a constant horizontal force of 297 N on the crate. A man pushes a crate labeled m, which moves with a velocity vector v to the right, on a horizontal surface. The horizontal surface is textured from the right edge of the crate to a horizontal distance ℓ from the right edge of the crate. (a) Find the magnitude and direction of the net force on the crate while it is on the rough surface. magnitude ______N direction ---Select--- (b) Find the net work done on the crate while it is on the rough surface._____ J(c) Find the speed of the crate when it reaches the end of the rough surface._____m/sAn applied force of 44 N directed at an angle of -18.3 degrees with respect to the +x direction acts on a 2.89 kg mass that is initially at rest while on a horizontal surface. In moving a distance of 2.96 m in the +x direction, the object changes its kinetic energy by 30.2 J. What is the coefficient of kinetic friction?
- F(x) A 8kg block initially at rest is acted on by the force shown at an angle of 0 = 20'. The magnitude of this force changes as the block 4. moves: F(x) = (7.5 N/m)x. The coefficient of kinetic friction between the floor and the box is µ = 0.2. Determine the speed of the block after the block has moved 5.0m.A box weighing 3.9 kg is initially at rest on a horizontal floor. It is then pushed in a straight line for 1.2 m by a girl exerting a horizontal force with a magnitude 36 N. What is the final speed of the box if there if no friction between the floor and the box? What is the final speed if a coeffient 0.30 would be introduced between the floor and the box?Problem 2: The force F = (3.43 N)i + (4.66 N)j acts on a particle as it moves first along the x axis from x = 1.59 m to x = 8.85 m, then parallel to the y axis from y = 1.18 m to y = 6.84 m.
- A girl on a skateboard (total mass of 40 kg) is moving at a speed of 10 m/s at the bottom of a long ramp. The ramp is inclined at 20° with respect to the horizontal. If she travels 14.2 m upward along the ramp before stopping, what is the net frictional force on her?A man pushing a crate of mass m = 92.0 kg at a speed of v = 0.880 m/s encounters a rough horizontal surface of length = 0.65 m as in the figure below. If the coefficient of kinetic friction between the crate and rough surface is 0.357 and he exerts a constant horizontal force of 293 N on the crate. (a) Find the magnitude and direction of the net force on the crate while it is on the rough surface. magnitude N direction --Select--- (b) Find the net work done on the crate while it is on the rough surface. (c) Find the speed of the crate when it reaches the end of the rough surface. m/sA biker is riding his Yamaha Raptor 700r (atv) on an upward hill in the middle of a desert in dubai. The hill has a slope of theta = 120 degrees. The mass of the atv and biker combined is 260 kg and the static friction coefficient between is .43. Determine the minimum speed of the atv to be able to drive over the hill.
- A warehouse worker is pushing a 90.0 kg crate with a horizontal force of 276N at a speed of v = 0.875m/s across the warehouse floor. He encounters a rough horizontal section of the floor that is 0.75 m long and where the coefficient of kinetic friction between the crate and floor is 0.353. (a) Determine the magnitude and direction of the net force acting on the crate while it is pushed over the rough section of the floor. magnitude Ndirection ---Select--- up down in the same direction as the motion of the crate in the opposite direction as the motion of the crate (b) Determine the net work done on the crate while it is pushed over the rough section of the floor. J (c) Find the speed of the crate when it reaches the end of the rough surface. m/sA man pushing a crate of mass m = 92.0 kg at a speed of v = 0.860 m/s encounters a rough horizontal surface of length ℓ = 0.65 m as in the figure below. If the coefficient of kinetic friction between the crate and rough surface is 0.350 and he exerts a constant horizontal force of 291 N on the crate (a) Find the magnitude and direction of the net force on the crate while it is on the rough surface.magnitude_____N direction (b) Find the net work done on the crate while it is on the rough surface. _____J(c) Find the speed of the crate when it reaches the end of the rough surface. ______m/sA box with a mass of 7.24 kg is held at the top of frictionless inclined plane of length L = 10.9 m and an inclination angle 0 = 26.9 degrees above the horizontal. The box is released from rest and stops at a distanced = 22.62 m from the bottom of the inclined plane along the rough horizontal surface. What is the coefficient of kinetic friction between the box and the rough horizontal surface?