A 5000-N force compresses a steel block by 0.0025 cm.
How much force would be needed to compress the block by 0.0125 cm?
1000 N
25000 N.
2500 N
5000 N.
A 55-cm brass rod has a diameter of 30 cm. The compressive strength of steel is 250 x 106 N/m².
What is the compression force that would break the rod?
2.4 x 10⁸ N.
4.5 x 10⁸ N.
1.4 x 10⁸ N.
1.8 x 10⁷ N.
A steel lift column in a service station is 4.0 m long and 0.20 m in diameter. Young's modulus for steel is 20 x 1010 N/m².
By how much does the column shrink when a 5000-kg truck is on it?
7.8 x 10⁻⁶ m.
3.2 x 10⁻⁶ m.
3.1 x 10⁻⁵ m.
8.0 x 10⁻⁷ m.
The graph shows the behaviour of a sample of a metal when it is stretched until it starts to undergo plastic deformation. What is the estimated work done in stretching the sample from zero extension to 12.0 mm?
3.60 J.
3.30 J.
6.60 J.
3.55 J.
