A body of mass 7.5 kg is to be pulled along a plane which is inclined at 30º to the horizontal. If the efficiency of the plane is 75%, what is the minimum force required to pull the body up the plane?
The angular speed of an object describes a circle of radius 4m with linear constant speed of 10m/s is
At what angle to the horizontal must the nozzle of a machine gun be kept when firing to obtain maximum horizontal range of the bullets?
Which of the following will reduce the frequency of oscillation of a simple pendulum?
A car travelling at a uniform speed of 120km/hr passes two stations in 4minutes. Calculate the distance between the two stations.
