Flash Cards (current)
Games
Teachers

Resistance In Mechanical Systems

Test Description: Principles of Technology Unit 4: Resistance Subunit: 1 Mechanical Systems

Instructions: Answer all questions to get your test result.

1) What are the two types of resistance in a mechanical system?

Alubricant and drag force Bdrag force and friction Cfriction and lubricant Ddrag force and acceleration

2) The upwards force on an airplane flying through the air is called

Athrust. Bgravity. Clift. Ddrag force.

3) What symbol represents the coefficient of friction?

AПЃ BО± CОј DП‰

4) The normal force (N)

Ais the force that opposes the motion of an object. Bis the upward force that is at a right angle to the sliding surfaces. Cis the force that keeps the object in motion. Dis the downward force that is at a right angle to the sliding surfaces.

5) The type of friction that must be overcome to start moving an object is called

Anormal friction. Bcoefficient of friction. Ckinetic friction. Dstatic friction.

6) As the coefficient of friction increases, the force required to move an object

Aincreases. Bdecreases. Cremains the same. Dis halved.

7) Weight is an example of

Aforce. Bgravity. Cvelocity. Dmass.

8) If an object is moving at a constant speed, then the sum of the all forces on the object

Ais less than one. Bis greater than one. Cis halved. Dequals zero.

9) ________ reduces friction in mechanical systems.

AStreamlining only BLubricants, streamlining CLubricants only

10) How much applied force is needed for a 50 lb. object to slide across a floor that has a coefficient of sliding friction of 0.4.

A0.4 + 50 lb B0.4 * 50 lb C0.4 - 50 lb D0.4 / 50 lb

*select an answer for all questions

Play Games with the Questions Above

WAIT! Find what you needed?

Still Looking for the Answers? Have Another Question? Play a Review Game with These Questions? Want to Make Your Own Test Like This One?