In tests on earth a lunar surface exploration vehicle (mass = 5.90 103 kg) achieves a forward acceleration of 0.215m/s2. To achieve this same acceleration on the moon, the vehicle's engines must produce a drive force of 1.64 103 N. What is the magnitude of the frictional force that acts on the vehicle on the moon?

Answer the question correctly. Thank you!

A string is tied to a 3.2 kg object on a table and a 1.5 kg object hanging over a pulley.The coefficient of kinetic friction between the 3.2 kg object and the table is0.30.(a) Draw FBD for each object. D/(b) Calculate the acceleration of each object.(c) Determine the magnitude of the tension in the string.(d) How far will the objects move in 1.2 s if the initial velocity of the 3.2 kg object is1.3 m/s [right]?

A robot pushes a 20-kg box on the horizontal surface as part of the moving job. The force is 35 N to the left shown, and the box does not move. The coefficients of friction between the floor and box are µs = 0.75 and uk = 0.40. What is the minimum pushing force (magnitude only) needed to move the box, in Newtons? Useg = 10 m/s². Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.

A block is sliding down a ramp at an angle of 0 = 16° to the horizontal. Its initial speed is 2.8 m/s. After sliding 13.6 m along the ramp, it comes to a rest. What is the coefficient of kinetic friction, µ., between the block and the ramp? Ө

A 3.49 kg mass is initially at rest on a 54 degree incline. An applied force of 47.8 N directed up the incline acts and the mass accelerates up the incline at a rate of 3.14 m/s2. What is the coefficient of kinetic friction?

A 63.0-kg box is pulled by a rope making an angle of  θ = 22.0°  with the horizontal. The tension in the rope is  34.5 N.  (Assume the surface the box slides across is frictionless.)If the box starts from rest, determine the time required to move the box a horizontal distance of 2.67 m.

You want to push a 22.0 kg rock up a 42.0° hill. You do so by pushing the rock with a 432.0 N horizontal force. The coefficient of kinetic friction between the rock and the hill is 0.125. What is the acceleration of the rock up the hill? What's the normal force from the hill on the rock?

You are designing a high-speed elevator for a new skyscraper. The elevator will have a mass limit of 2400 kg (including passengers). For passenger comfort, you choose the maximum ascent speed to be 18.0 m/s, the maximum descent speed to be 10.0 m/s, and the maximum acceleration magnitude to be 5.00 m/s2. Ignore friction. What is the maximum upward force that the supporting cables exert on the elevator car?

A contestant in a winter sports contest pulls a 47 kg brick of ice 25 degrees in the positive horizontal direction with a rope over his shoulders over a frozen lake. Assume the coefficients of static and kinetic friction are µs=0.1 and µk=0.03. 1. Calculate the minimum force F he must exert to get the brick sliding in newtons.  2. What is its acceleration in m/s2 once it starts to move, if that force is maintained?