
Calculate the work done by an 70.0-kg man who pushes a crate 4.50 m up along...
An 85.0-kg man who pushes a crate 4.2 m up along a ramp that makes and angle of 21° with the horizontal. He exerts a force of 500 N on the crate parallel to the ramp and moves at a constant speed. a) Calculate the work done by the man on the crate. b) Calculate the work done by the man on himself.
A worker pushes a 100 kg crate upward a distance 5.0 m along a frictionless conveyer that makes an angle of 30 degrees with the horizontal. The force she exerts is parallel to the conveyer. If the speed of the crate is constant, the work done by the worker is A 250 J B -2,500 J C 2,500 J D 500 J E -250 J F -500 J
a crate of mass 27 kg is pushed up a ramp by a person as shown in the figure below. the person pushes the crate a distance of 17 m as measured along the ramp. assume the crate moves at constant velocity. assume the coefficient of kinetic friction between the crate and the ramp is μk = 0.47. what is the work done by the person as he pushes the crate up the ramp? ? J
A man pulls a 101.0 N crate up a frictionless ramp that is inclined at 0.9768 rad above the horizontal, starting at the bottom and going all the way to the top. The ramp is 5.143 m high, and the pulling force is parallel to the surface of the ramp. Assuming that the crate moves at a constant speed, calculate how much work did the man did on the crate. NOTE: Be sure to include units. W
A man pulls a 552.8 N crate up a frictionless ramp that is inclined at 0.8142 rad above the horizontal, starting at the bottom and going all the way to the top. The ramp is 8.666 m high, and the pulling force is parallel to the surface of the ramp. Assuming that the crate moves at a constant speed, calculate how much work did the man did on the crate. NOTE: Be sure to include units. W
A man pushing a crate of mass m = 92.0 kg at a speed of v = 0.845 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 0.357 and he exerts a constant horizontal force of 292 N on the crate. A man pushes a crate labeled m, which moves with a velocity vector v to the right, on...
A man pushing a crate of mass m= 92.0 kg at a speed of v=0.880m/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 0.356 and he exerts a constant horizontal force of 293N on the crate, find the following.(a) Find the magnitude and direction of the net force on the crate while it is on the rough surface.magnitudeNdirection---Select---updownin the same direction as...