Question

62 need help PLEASE DRAW FREE BODY DIAGRAMS!!!!!

A boy coasts down a hill on a sled, reaching a level surface at the bottom with a speed of 7.0 m/s. if the coefficient of friction between the sled's runners and the snow is 0.050 and the boy and sled together weigh 600 N, how far does the sled travel on the level surface before coming to rest? A woman at an airport is towing her 20.0-kg suitcase at constant speed by pulling on a strap at an angle theta above the horizontal (Fig. d.62). She pulls on the strap with a 35.0-N force, and the friction force on the suitcase is 20.0 N. Draw a free-body diagram of the suitcase. What angle does the strap make with the horizontal? What is the magnitude of the normal force that the ground exerts on the suitcase? A box rests on the back of a truck. The coefficient of static friction between the box and the bed of the truck is 0.300. When the truck accelerates forward, what force accelerates the box? Find the maximum acceleration the truck can have before the box slides. Three objects are connected by light strings as shown in

Answer 1

Here, normal acts in upwards direction , friction acts towards left direction

Here, F * cos(theta) = Fr

=> 35 * cos(theta) = 20

=> theta = 55.15 degree

=> angle strap makes with horizontal = 55.15 degree

=> magnitude of normal force = 20 * 9.8 - 35 * sin55.15

                                              = 167.27 N