Two students are rolling a ball in the grass. Student 1 applies a force of 20 N to a ball in order to roll to Student 2. If the force of friction resisting the ball is 12 N, what is the net force acting on the board? 8N 240N C 10N D 32N

LA student presses a 0.5 kg book against the wall. If the µ̟ between the book and the wall is 0.2, what force must the student apply to hold the book in place? (A) ON (B) 15 N (C) 25 N (D) 35 N

A 100. N force is applied to a 21.2 kg crate to slide it along a rough horizontal surface. The diagram shows the forces acted on the crate in this situation. What was the magnitude of the normal force acting on the crate? (a) 208 N                       (b) 258 N (c) 121 N (d) 69.6 N (e) 158 N

Determine the resultant ?R of the three tension forces acting on the eyt bolt. Find the magnitude of R and the angle θx which R makes with the positive x-axis.  Note that F1= 563 N, F2= 345 N and F3= 296 N.

A warehouse worker applies a force F to accelerate two crates, mã and mp, to the right along a rough floor. Crate mд has a mass of 4m, crate mp has a mass of m. Choose 1 answer: A F Which is the correct relationship between the applied force F acting on mд and the force mд exerts on mB? B D MA mB The force Facting on my is smaller than the force that mA exerts on MB. The force Facting on my is the same as the force that mA exerts on MB. The force Facting on my is larger than the force that mд exerts on MB. The answer depends on the relative size of the friction force on MA and MB.

Two masses m,=5 Kg and m2=9 Kg are connected with string and pulled with a force F=27 N that makes an angle of 53º with a smooth horizontal surface as shown in the figure. Find the tension in the string in a unit of Newton. F m2 m1

An antelope is being pulled by two forces whose vector-component expressions are: F1 = -2Ni + 4.8Nj + -3.6Nk F2 = 6.5Ni + 2.2Nj + 8.3Nk %3D What is the angle (in degrees) between these two vectors?

You and your friend are moving a 82kg box across the floor at a constant speed.  You are pushing on the crate parallel to the ground with a force of 62N.  Your friend has a rope tied to the box and they are pulling it at an angle of 37° to the ground with a force of 32N. Construct the free body diagram showing the force acting on the crate in order to find the magnitude of friction the floor exerts on the box.

A block with mass m = 9 kg is attached to two %3D ropes as shown below. What is the magnitude of the tension in each of these ropes, T = ? Use g = 10 m/s?. %3D 50 32.6 N O 45.7 N O 52.2 N 39.2 N O 58.7 N

four forces act on an object, given by A=32.3 N, east B=50.3 N north, c = 82,7 n west, and d=72.7 n south ( assume east and north are directed along the + x-axis and y+-axis respectively.) a. what is the magnitude of the net force (in N) on the object? b. what is the direction of the force? ( enter your answer in degree counterclockwise from the +x-axis.)