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A jib crane is shown carrying a load of 1000 kg. Find the force in the jib by
calculation. https://ibb.co/r0JWVsH - 🧠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. - 🧠ANSWER ✔✔112.9 N
One of the conditions of a force system in equilibrium is: - 🧠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. - 🧠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
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, friction between the mass and the floor is 0.23, and that between his boot
soles and the floor is 0.5? - 🧠ANSWER ✔✔152.2 kg
The difference between a vector and a scalar is that: - 🧠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. -
🧠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: - 🧠ANSWER ✔✔10.8
m at 56 deg. N of W
Forces of 20 N and 30 N are pulling on a ring as shown. Determine the
resultant. https://ibb.co/2tPMN9J - 🧠ANSWER ✔✔28.2 N, 60° N of E
A body with a gravitational force of 2000 N is pulled along a horizontal
surface at constant speed by a rope, which makes an angle of 20° above
the horizontal. If the force on the rope is 150 N, the coefficient of sliding
friction is: - 🧠ANSWER ✔✔0.0704
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STATEMENT. ALL RIGHTS RESERVED
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