Chapter 14, Problem 60P

A 250-N(≈25-kg) cabinet is placed on a smooth surface. If a force of a 300 N is applied for 1 s, determine the net impulse on the cabinet during this time interval

9. An automobile having mass of 2 t travels up a 7° slope at constant speed 27 m/s. If mechanical friction and wind resistance are neglected, determine the power developed by the engine if the automobile has efficiency e = 0.65.

An automobile having a mass of 2000 kg travels up a 7 degree slope at a constant speed of v = 100 km/h. If mechanical friction and wind resistance are neglected, determine the power developed by the engine if the automobile has an efficiency ε = 0.65.

The 50-lb load is hoisted by the pulley system and motor M. If the motor exerts a constant force of 30 lb on the cable, determine the power in hp that must be supplied to the motor if the load has been hoisted s = 10 ft starting from rest. The motor has an efficiency of 0.76.

The block has a mass of 50 kg and rests on the surface of the cart having a mass of 75 kg. If the spring which is attached to the cart and not the block is compressed 0.2 m and the system is released from rest, determine the speed of the block with respect to the cart after the springg becomes undeformed. Neglect the mass of the wheels and the spring in the calculation. Also the neglect friction. Take k = 300N/m,

1- The roller coaster car has a brake and return system that has characteristics of a spring with a constant 45 lbs / ft. If the car has an initial velocity of 3 ft / s, determine the total force that the brake and return system must store. Assume that there is no friction, that the travel on the flat (from D to the spring) is 350 feet, and that the test weight of the car with passengers is 1000 Ibs. What does the sign of the answer mean? r=240 ft 90 ft RESORTE 60 ft

The 1.5 Mg car increases its speed uniformly from rest to 36 m/s in 8 s up the inclined road. Determine the maximum power that must be supplied by the engine, which operates with an efficiency of ε = 0.42. Also, find the average power supplied by the engine.   Please show every single step of the process thanks

Determine the constant force “f” w/c must be applied to the cord in order to cause the 39lb block to have a speed of 22 ft/a when it has been displaced 0.5 ft upward starting from the rest.

The box having mass of m is being pulled by a motor. Initial velocity of the box is v0. Motor pulles the box by force F= 500s+550, where s is the distance the box is pulled (meters), and force is in newtons. Define the velocity and acceleration of the box as a function of distance ‘s’. If the motor has efficiency of ε = 0.65, power input required to be supplied by the motor as a function ofdistance.