## determine the horizontal force that will result on the ball from accelerating a 2 000-kg trailer to 60 m/s in 20 sec.

1.       For the trailer hitch of Problem 3-4, determine the horizontal force that will result on the ball from accelerating a 2 000-kg trailer to 60 m/s in 20 sec. Assume a constant acceleration. Size and specify the bolts and their preload for a safety factor of at least 1.7.‡

2.       For the trailer hitch of Problem 3-4, determine the horizontal force that will result on the ball from an impact between the ball and the tongue of the 2 000-kg trailer if the hitch deflects 1 mm on impact. The tractor weighs 1 000 kg. The velocity at impact is 0.3 m/s. Size and specify the bolts and their preload for a safety factor of at least 1.7.‡

### Calculate the maximum achievable bridge out-of-balance voltage for an applied torque T of 103 N m given the following

Four strain gauges, with specification given below, are available to measure the torque on a cylindrical shaft 4 cm in diameter connecting a motor and load. (a) Draw clearly labelled….

### Find the gain and phase characteristics of the maintaining amplifier.

A solid-state capacitive humidity sensor has a capacitance given by: C = 1.7 RH + 365pF where RH is the percentage relative humidity. The sensor has an associated parallel resistance….

### calculate the mean velocity of the gas at maximum flow rate

A pitot tube is used to measure the mean velocity of high pressure gas in a 0.15 m diameter pipe. At maximum flow rate the mean pitot differential pressure is….