Question

answer a . b . c. and underline each answer

above the horizontal. She pulls on the strap with a 39.6-N force, A woman at an airport is towing her 14.0 kg suitcase at constant speed by pulling on a strap at an angle and the friction force on the suitcase is 20.0 N Ch e ne (a) Draw a free-body diagram of the suitcase This answer has not been graded yet (6) What angle does the strap make with the horizontal? (c) What is the magnitude of the normal force that the ground exerts on

Answer 1

a. The free body diagram of the suitcase is shown in the following figure. tong b. Now we use Newton's second law to find the angle made by the string with the horizontal. Using Newton's second law along x axis, we get Fnet = T cos 8-fi = 0 T cos 0 = fi The tension is already given and is equal to 39 N, force of friction is 20 N. Now we get cos O== 39 o= cos-11 Cos 120 c. 0 = 59.1° In the vertical direction we get Fpt = N +T sin 0-mg = 0 N = mg-T sino N=14x9.8–39 x sin 59.1° N=104 N These are the answers.