A physics TA pushes a 20.0 kg equipment cart at a constant velocity for a distance of 26.0 m down the hall. The force she exerts on the cart is directed at an angle 22.0° below the horizontal, and the force friction opposing the motion of the cart is 42.0 N. Determine the following. (a) the magnitude (in N) of the force exerted on the cart by the TA N (b) the work done (in J) by the force the TA exerts on the cart (c) the work done (in J) by the force of friction acting on the cart J (d) the work done (in J) by the force of gravity acting on the cart
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- Current Attempt in Progress a In the figure, a horizontal force F of magnitude 18.0 N is applied to a 3.03 kg book as the book slides a distance d = 0.51 m up a frictionless ramp at angle 0 = 30°. (a) During the displacement, what is the net work done on the book by Fa, the gravitational force o the book, and the normal force on the book? (b) If the book has zero kinetic energy at the start of the displacement, what is its speed a the end of the displacement? Use g=9.81 m/s². ar (a) Number i (b) Number Units Units Psychology 8 +7A horizontal force of 150 N is used to push a 47.5-kg packing crate a distance of 5.00 m on a rough horizontal surface. If the crate moves at constant speed, find each of the following. (a) the work done by the 150-N force (b) the coefficient of kinetic friction between the crate and the surfaceA horizontal force of 150 N is used to push a 41.5-kg packing crate a distance of 6.05 m on a rough horizontal surface. If the crate moves at constant speed, find each of the following. (a) the work done by the 150-N force (b) the coefficient of kinetic friction between the crate and the surface
- A 32-kg block is pulled along the ground for a distance of 4.9 m by a 57 N force at an angle of 21 degrees with respect to the horizontal. The coefficient of kinetic friction is 0.21. a) Find the work done (in J) by the applied force. b) Find the work done (in J) by the normal force exerted by the ground. c) Find the work done (in J) by the force of gravity.Please help!A 17.9 kg block is dragged over a rough, horizontal surface by a constant force of 111 Nacting at an angle of angle 31.1◦above the horizontal. The block is displaced 60 m and the coefficient of kinetic friction is 0.152. Find the work done by the 111 N force. The acceleration of gravity is 9.8 m/s2.Answer in units of J. Find the magnitude of the work done by the force of friction.Answer in units of J What is the sign of the work done by the frictional force?1. positive2. negative3. zero Find the work done by the normal force.Answer in units of J What is the net work done on the block?Answer in units of J.
- A cable exerts a constant upward tension of magnitude 2.70 ✕ 104 N on a 2.40 ✕ 103 kg elevator as it rises through a vertical distance of 2.90 m. HINT (a) Find the work done by the tension force on the elevator (in J). J (b) Find the work done by the force of gravity on the elevator (in J). JA 35 kg sled slides along a horizontal surface on which the coefficient of kinetic friction is 0.25. Its velocity at point A is 10.0 m/s, and its velocity at point B is 2.0 m/s. You must use Work/Energy methods (not Kinematics). (a) What is the frictional force acting on the sled? (b) How much work is done on the sled by friction over the displacement ∆x = xB − xA? (c) What is the distance the sled travels between A and B?A horizontal force of 150 N is used to push a 40.0-kg packing crate a distance of 6.00 m on a rough horizontal surface. If the crate moves at constant speed, find (a) the work done by the150-N force and (b) the coefficient ofkinetic friction between the crate and surface.
- Several children are on a sled pulled by a four-wheeler across a level snow-covered field. The sled is moving at a constant speed of 9.25 m/s, and the tow rope (parallel to the ground) makes an angle of 35.0°, with respect to the velocity of the sled (see the figure below). a 35.0⁰ 1170 If the tension in the rope is 49.0 N, determine the work done (in J) on the sled by the tension in the rope in 10.5 s. JA man cleaning a floor pulls a vacuum cleaner with a force of magnitude 50.0 N at an angle of 20 degrees from the positive x axis. Calculate the work done by the man s force on the vacuum cleaner as the vacuum cleaner is displaced 3.00 m to the right?A man returning from ice fishing trip pulls a sled with fish. Total mass of the sled and fish is 50.0 kg. (b) Suppose the coefficient of kinetic friction between sled and snow is 0.20. The man pulls the sled 5.0 m by exerting a force of 120 N at 0°. Find the work done by force of frictional.