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i need help with question number 24 parts A and B?Class Management | HelpHomework 3 (Copy 1) Begin Date: 2/20/2019 12:01:00 AM — Due Date: 3/5/2019 11:59:00 PM End Date: 3/5/2019 11:59:00 PM(4%) Problem 24: Two blocks connected by a string are pulled across a horizontal surface by aforce applied to one of the blocks, as shown to the right. The mass of the left block m1 = 1.4 kg andthe mass of the right block m2 = 3.2 kg. The angle between the string and the horizontal is 0 = 61′.FThe coefficient of kinetic friction between the blocks and the surface is u = 0.39. Each block has an9acceleration of a = 2.1 " to the right.m150% Part (a) Write an equation for the magnitude of the force exerted by the string. Use variables from the problem statement as well as usingg for the gravitational acceleration.F=Grade SummaryDeductions0%Potential100 %cos(()cos(@)cos(( ) 7 8 9HOMESubmissionssin(@)sin(@)sin(0)14 4| 4 56Attempts remaining: 44% per attempt)Y123detailed viewatram 1+END12nqVOBACKSPACEDELCLEARSubmitHintFeedbackI give up!Hints: 0 for a 0% deduction. Hints remaining: 0Feedback: 5% deduction per feedback.4 50% Part (b) Calculate the magnitude of the applied force F. Give your answer in newtons.