An object is acted upon by a system of parallel forces causing the object to be in static equilibrium. Which of the following statements is not correct?
A. The resultant of the parallel force is zero B. the algebraic sum of the moment of the forces is zero C. all the parallel forces must be equal in magnitude and in direction D. the sum of the forces in one direction must be equal to the sum of forces in the opposite...An object is released from rest at a height of 25m. Calculate the time it takes to fall to the ground. [g = 10ms‾²]
A. 25.00s B. 10.00s C. 2.50s D. 2.24s Correct Answer: Option D D. 2.24s Explanation t = √2s/g =√2×25/10 =2.24A car takes off from rest and covers a distance of 80m on a straight road in 10s. Calculate the magnitude of its acceleration
A. 1.25ms‾² B. 1.60ms‾² C. 4.00ms‾² D. 8.00ms‾² Correct Answer: Option B B. 1.60ms‾² Explanation s = ut+½at² 80 = 0 x 10 + ½ x a x 10² a = 80/50 =1.6m/s²The magnitude of the force required to make an object of mass, M move with speed, V in a circular of radius R is given by the expression.
A. mr/v B. mr²/v C. mv²/r D. mv/r² Correct Answer: Option C C. mv²/rProducts
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