4th TSSA Part A Unit 1 Exam Questions and Answers

4th TSSA Part A Unit 1 Exam Questions and Answers (4-009-2.3) The ability of a body to do work due to its motion is called ____________ energy. - Answer-Kinetic (4-009-1.7) The change of position (in meters) per unit time is: - Answer-Velocity (4-015-1.5) The force of friction is: - Answer-Not affected by the area of the two surfaces in contact. (4-012-1.11) With reference to scalars and vectors, a space diagram: - Answer-Illustrates a system of vectors. (4-016-3.3) A 1.5m long round bar is 45mm diameter and stretches 1.2mm under a load of 240kN. Calculate the strain in the bar. - Answer-0.0008 (4-015-2.7) Find the force required to move a 25kg block along a horizontal floor if the coefficient of sliding friction is 0.19. - Answer-46.6 N (4-013-1.1) Velocity is a/an ___________ quantity. - Answer-Vector (4-010-2.8) A 5m long bar is pivoted on the right end and a force of 10N is applied upwards on the left end. The moment of force is: - Answer-50Nm clockwise (4-016-2.8) External tensile forces acting parallel but not in line produce _________ in an object. - Answer-Shear stress (4-017-2.2) A 28-tooth gear turns at 100 rpm and drives a 112-tooth gear. What is the speed of the follower gear? - Answer-25 rpm (4-009-2.8) The ability of a body to do work by virtue of its position is the body's ___________ energy. - Answer-Potential