Deformation

Which statement is true about deformation?

• No change in shape or size occur

• change in shape by the application of force

• change in mass by the application of force

• change in force by area

Tags

NGSS.MS-PS2-5

Which type of deformation occur when a metal drink can is squashed?

• deforming force

• elastic deformation

• restoring force

• inelastic deformation

What will happen to the elastic material if we keep on increasing the load?

• It will change shape

• It will be deformed when it exceed elastic limit

• It will return to original shape

• None of above

A Spring has a spring constant equal to 6N/m. Which force will make it stretch to 0.2m?

• 1.2 N

• 3.5 N

• 8.7 N

• 30 N

What is Hook's law?

• Deformation is not fully reversed when the force is removed - there is a permanent change in shape.

• It states that  within the elastic limit, extension is directly proportional to load applied to it, provide the  limit of proportionality is not exceeded.

• Deformation is reversed when the force is removed.

• Point beyond which the spring will no longer return to its original shape when the force is removed.

A force of 4 N is applied to a spring. The spring stretches reversibly by 0.25 m and came back to its normal shape after the force has been removed. Calculate the spring constant.

• 18 Nm

• 1 Nm

• 16 Nm

• 6 Nm

A force of 8 N is applied to a spring. The spring stretches reversibly by 0.25 m and came back to its normal shape after the force has been removed. Calculate the spring constant.

• 32 Nm

• 45 Nm

• 56 Nm

• 6 Nm