Friday

February 27, 2015

February 27, 2015

Posted by **PURITAE** on Tuesday, May 21, 2013 at 1:45am.

- physics -
**PURITAE**, Tuesday, May 21, 2013 at 1:53am(a) A 5.00 kg block is moving at vo= 6.00m/s along a frictionless, horizontal surface towards a spring with a force constant k = 500 N/m that is attached to a wall (Figure 13.5). The spring has negligible mass. Find(i) the maximum distance the spring will be compressed and (ii) the spring is compressed by no more than 0.150 m, what should be the maximum value of vo? (4 marks)

(b) A steel railroad track is 1000 m long. When its temperature is raised from -30 oto + 30 othermal expansion causes the length of the track to increase by .01%. What compressive force per unit area would be required to keep the track from expanding? (Hint: Calculate the force that would be required to compress it back to its original length. Young's modulus for steel is 2 x 1011N/m2.

(c) A hydraulic press contains 0.25m3(250 L) of oil. Find the decrease in volume of the oil when it is subjected to a pressure increase, ∆p = 1.6 x 107 Pa. The bulk modulus , B of oil is 5.0 x 109 Pa and its compressibility K = 1/B = 2.0 x 10-10 Pa-1.

**Answer this Question**

**Related Questions**

physics - In Figure 12-6, a ladder of length L = 12 m and mass m = 46 kg leans ...

physics - A 10.9-kg monkey climbs a uniform ladder with weight w = 1.24 102 N ...

physics - A uniform ladder, 3 m long and weighing 130 N, placed against a smooth...

Calculus - Suppose a ladder of length 36 feet rests against a wall, and we pull ...

SCIENCE - A uniform ladder which is 10metres long and weighs 300newtons leans ...

Physics - A 6m long uniform ladder which has a mass of 25kg leans with its upper...

phsics - uniform ladder 25 ft long rests against a smooth vertical wall. The ...

PHYSICS - A 75 kg window cleaner uses a 10 kg ladder that is 7.2 m long. He ...

Physics - A 75 kg window cleaner uses a 10 kg ladder that is 7.2 m long. He ...

Physics - A 77 kg window cleaner uses a 13 kg ladder that is 7.1 m long. He ...