[Vectors]Hard Problems Need to solve Immediately with answer please

Thread starter parth0009
Start date Sep 2, 2010

Sep 2, 2010

parth0009

[Vectors]Hard Problems... Need to solve Immediately with answer... please... URGENT

Problem 1:

Problem 2:

Problem 3:

Please answer as soon as possible within 3 hours.

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Sep 2, 2010

rock.freak667

Homework Helper

You need to pose your attempts.

For the first question try putting the forces into vector form.

Thread 'Minimum mass of a block'

Here we know that if block B is going to move up or just be at the verge of moving up

will act downwards and maximum static friction will act downwards

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Thread 'Calculation of Tensile Forces in Piston-Type Water-Lifting Devices at Elevated Locations'

Figure 1 Overall Structure Diagram Figure 2: Top view of the piston when it is cylindrical A circular opening is created at a height of 5 meters above the water surface. Inside this opening is a sleeve-type piston with a cross-sectional area of 1 square meter. The piston is pulled to the right at a constant speed. The pulling force is（Figure 2）： F = ρshg = 1000 × 1 × 5 × 10 = 50,000 N. Figure 3: Modifying the structure to incorporate a fixed internal piston When I modify the piston...

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