Engineering Mechanics If the body falls freely under gravity, then the gravitational acceleration is taken as -8.9 m/s2 -9.8 m/s2 +8.9 m/s2 +9.8 m/s2 -8.9 m/s2 -9.8 m/s2 +8.9 m/s2 +9.8 m/s2 ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics An ideal machine is one whose efficiency is Between 70 and 80% 1 Between 80 and 90% Between 60 and 70 % Between 70 and 80% 1 Between 80 and 90% Between 60 and 70 % ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The law of the machine is (where P = Effort applied to lift the load, m = A constant which is equal to the slope of the line, W = Load lifted, and C = Another constant which represents the machine friction.) P = mW + C P = mW - C P = C - mW P = m/W + C P = mW + C P = mW - C P = C - mW P = m/W + C ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The total energy possessed by a system of moving bodies Is maximum in the start and minimum at the end Is constant at every instant Varies from point to point Is minimum in the start and maximum at the end Is maximum in the start and minimum at the end Is constant at every instant Varies from point to point Is minimum in the start and maximum at the end ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The acceleration of a particle moving with simple harmonic motion, at any instant is given by ω3.y ω.y ω2.y ω2/y ω3.y ω.y ω2.y ω2/y ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics In a single threaded worm and worm wheel, the number of teeth on the worm is 50. The diameter of the effort wheel is 100 mm and that of load drum is 50 mm. The velocity ratio is 200 100 400 50 200 100 400 50 ANSWER DOWNLOAD EXAMIANS APP
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