QUESTION ONE A worker pulls on a rope to properly position a 105 kg net full of fish to be lowered with a winch into a refrigeration hold as shown below. The tension in AC is 300N and @ = 21 degrees

LUSAKA APEX MEDICAL UNIVERSITY CHALALA CAMPUS PREMED FACULTY, DEPARTMENT OF PHYSICS P191 ASSIGNMENT TWO Prepared By Eng. KOMBE D.S , Mrs. Z ULU & Mr . R. CHOLA Instructions: En sure that your student name, ID and TG are correctly indicated on your Answer script. You are expected to Answer all Questions in chronological order and show all working. Submissions after due date will not be accepted . Due Date: 29/13/202 1 @ 14HRS Q UESTION ONE A worker pulls on a rope to properly position a 105 kg net full of fish to be lowered with a winch into a refrigeration hold as shown below . The tension in AC is 300N and ϕ = 21 degrees. Find the force carried in the AB and the angle . [10 ] QUESTION TWO (A) Use dimension analysis to derive an equation that shows how Pressure( P) is related to Force( F), velocity ( V) and acceleration ( A). [3] (B) The velocity V of a particle depends upon time ‘t’ according to the equation V = √ + bt + Use Dimension analysis to determine the dimensions of a, b and c. What physical quantity does each letter represent? [3] (C) A person gardening accelerates a lawnmower of mass 18kg from rest to a speed of 1.2m/s in 2 seconds. The retarding force F shown in the figure below is 61.3N. Calculate the force P that must be directed along the handle to accelerate the lawnmower. [4] QUESTION THREE (I) A stone is thrown straight with a speed of 53.685 miles /hr. It is caught on its way down at a point 7.2m above the position it was thrown. (A) How fast was it going when it was caught? [3] (B) How long did the trip take? [2] (II) A car accelerate s from rest for 30s , then travels at a constant velocity for 20s before decelerating for 20s and coming back to rest as shown in the figure b elow. (A) W hat is the value of the acceleration at 40s and 60s respectively? [2] (B) W hat is the total displacement after 70s? [3] ALL THE BEST!!!