An automobile produces 20 kW when moving with a velocity of 50 km/hr. Determine (a) the resisting force.
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- A 705 kg racecar driven by a 65 kg driver moves with a velocity of 382 km/h right. Find the force to bring the car and driver to a stop in 12.0 s.A man who weighs 180 lbs.is riding in an elevator. Find the force exerted on the man by the floor of the elevator under the following conditions: (a) The elevator is accelerating upward at 12 ft/sec2. (b) The elevator is accelerating downward at 12 ft/sec2. (c) The elevator is accelerating downward at 32 ft/sec2. Have we made any restrictions on the directions of the velocity in parts (a), (b), and/or (c)? If so, what?A car of mass 2.5 tonnes moves on a level road under the action of 1 kN propelling force. The acceleration of the car to increase its velocity from 36 kmph. to 54 kmph is
- A 100-lb force exerted against a 1000-lb block causes the block to slide with constant velocity. The pushing force and thefriction force exerted are?1. An automobile produces 20 kW when moving with a velocity of 50 km/hr. Determine (b) the resisting (or drag) force if it is proportional to the velocity cubed and the automobile travels at 100 km/hr.A spring, whose unstretched length is 3 ft, stretches to a length of 8 ft when a force of 10 lb is applied. If 16 ft-lb of work is applied to stretch this spring from an unstretched position, what is it's total final length?
- 700 N 2650 N 60° P For the system shown above, the magnitude of the resultant force must not exceed 2400 N. Calculate:A truck weighing 5 kips is traveling with a constant velocity of 50 mph when brakes are applied causing a braking force of 2 kips. If the truck is going up a road inclined at 100, Proove that the distance traveled before it stops is 176.17 feet.1. A truck hauls a trailer at 60 km/hour when exerting a steady pull of 600 N. If the work is done for 40 minutes, the power required is (a) 6 kW (b) 4 kW (c) 2.4 kW (d) 10 kW
- A train of mass 200 tonnes moves on a level track having a track resistance of 85 Newtons per tonne. Find the maximum speed of the engine, when the power developed is 320 kW.A steel tank of weight 600 lb is to be accelerated straight upward at a rate of 1.5 ft/sec2. Knowing the magnitude of the force P is 525 lb, determine the values of the angle a and the required magnitude of the vertical force, F. I got the correct angle for a =45.5 degrees. But I must be doing something wrong for force F.A car delivers 160 hp to a winch used to raise a load of 1260 kg . Determine the maximum speed of lift.