Elasticity and Hooke's law

Question 1 of 10

A spring of constant 20 N/m carries a load of 4 N. Its extension is ___ m.

Question 2 of 10

Find the energy stored in a spring of constant 100 N/m stretched by 0.05 m.

Question 3 of 10

A brittle material

Question 4 of 10

A spring of constant 20 N/m carries a load of 10 N. Its extension is ___ m.

Question 5 of 10

Find the energy stored in a spring of constant 400 N/m stretched by 0.1 m.

Question 6 of 10

A steel wire is stiffer than a copper wire of the same dimensions.

Question 7 of 10

A spring stretches 4 cm under a load of 2 N. Find its spring constant.

Question 8 of 10

Hooke's law applies beyond the elastic limit.

Question 9 of 10

The elastic limit is the point beyond which

Question 10 of 10

Explain the terms elastic, plastic, ductile and brittle, giving an example of a material for each.