Two identical trusses support a load of 100 N as shown in the figure. The length of each truss is 1.0 in: cross-sectional area is 200mm2; Young's modulus E = 200 GPa. The force in the truss AB (in N) is _________
A train moving with a velocity of 100 km/hr and has constant velocity. The train is carrying 800 passengers. The weight of the train and avg. passengers is 1100 tonnes and 65kg. The passengers seating on their seats in the train will experience,
A Horizontal force of 10N is necessary to just hold a block stationary against a wall.The coefficient of friction between block and wall is 0.2. Weight of block (in N) is
Polar moment of inertia is
A boy kicks a football such that it acquires a velocity of 10m/s at an angle of 45 with the ground. If the goal is 15m away from the boy’s location, by how much distance did he miss his goal?
(take g=10 m/s2)
An elevator weighing 500 kg is to be lifted up at a constant velocity of 0.20 m/s. What would be the minimum horsepower of the motor to be used?