3rd TSSA Part 3A1 - Unit 4 UPDATED
ACTUAL Exam Questions and CORRECT
Answers
A jib crane is shown carrying a load of 1000 kg. Find the force in the jib by calculation.
https://ibb.co/r0JWVsH - CORRECT ANSWER - 11.33 kN
A block of stone of 40 kg is hauled along a horizontal floor by a force inclined 20 degrees to the
horizontal. If the coefficient of friction between the stone and the floor is 0.3, determine the
effort required to just move the stone from rest. - CORRECT ANSWER - 112.9 N
One of the conditions of a force system in equilibrium is: - CORRECT ANSWER - The
sum of the forces to the left must equal the sum of the forces to the right
A system of several vectors can be replaced by a single vector, called the ___________, which is
equivalent to a system. - CORRECT ANSWER - Resultant
A man has a mass of 70 kg. What is the magnitude of the largest mass he can pull by a horizontal
rope along a horizontal floor, if the coefficient of friction between the mass and the floor is 0.23,
and that between his boot soles and the floor is 0.5? - CORRECT ANSWER - 152.2 kg
The difference between a vector and a scalar is that: - CORRECT ANSWER - Vector is
not only a quantitative measure but also requires a directional indication while scalar is a
quantitative measure only
A body having a mass of 50.97 kg is pulled along a horizontal flat surface at a constant speed by
a force of 180 N, which makes an angle of +30° with the horizontal. Find the coefficient of
kinetic friction for the surfaces. - CORRECT ANSWER - 0.38
A displacement of 9 m north of point A, and another of 6 m west of point A can be added to
produce a resultant displacement of: - CORRECT ANSWER - 10.8 m at 56 deg. N of W
ACTUAL Exam Questions and CORRECT
Answers
A jib crane is shown carrying a load of 1000 kg. Find the force in the jib by calculation.
https://ibb.co/r0JWVsH - CORRECT ANSWER - 11.33 kN
A block of stone of 40 kg is hauled along a horizontal floor by a force inclined 20 degrees to the
horizontal. If the coefficient of friction between the stone and the floor is 0.3, determine the
effort required to just move the stone from rest. - CORRECT ANSWER - 112.9 N
One of the conditions of a force system in equilibrium is: - CORRECT ANSWER - The
sum of the forces to the left must equal the sum of the forces to the right
A system of several vectors can be replaced by a single vector, called the ___________, which is
equivalent to a system. - CORRECT ANSWER - Resultant
A man has a mass of 70 kg. What is the magnitude of the largest mass he can pull by a horizontal
rope along a horizontal floor, if the coefficient of friction between the mass and the floor is 0.23,
and that between his boot soles and the floor is 0.5? - CORRECT ANSWER - 152.2 kg
The difference between a vector and a scalar is that: - CORRECT ANSWER - Vector is
not only a quantitative measure but also requires a directional indication while scalar is a
quantitative measure only
A body having a mass of 50.97 kg is pulled along a horizontal flat surface at a constant speed by
a force of 180 N, which makes an angle of +30° with the horizontal. Find the coefficient of
kinetic friction for the surfaces. - CORRECT ANSWER - 0.38
A displacement of 9 m north of point A, and another of 6 m west of point A can be added to
produce a resultant displacement of: - CORRECT ANSWER - 10.8 m at 56 deg. N of W
