What is the bending moment at end supports of a simply supported beam?

67) One of the important factors for cutting speed of a workpiece is

68) The radius of a wheel is 80 cm and the radius of the axle is 20 cm. The velocity ratio of the wheel and axle is

69) A mild steel rod of 25 mm diameter is subjected to tensile load of 1000 kg. Calculate the stress

70) A car moving at a speed of 25 km/hour is brought to rest in 20 seconds. Find out the distance travelled by the car before coming to halt.