Resultant Force and Vector Quantities

Front

At one point in the rescue operation, breakdown vehicle A is exerting a force of 4000 N and breakdown vehicle B is exerting a force of 2000 N. Using a scale of 1 cm = 500 N, make a scale drawing to show the resultant force on the truck.

Back

Use your diagram to find the magnitude and direction of the resultant force on the truck.

Front

The resultant force is an example of a vector quantity because it has both magnitude and direction.

Back

Vector quantities are defined by their ability to be represented by arrows, where the length represents the magnitude and the direction of the arrow indicates the direction of the force.

Front

An example of a vector quantity that is not a force is velocity.

Back

Velocity is defined as the rate of change of position with respect to time and includes both speed and direction.

Front

A student sets up the apparatus to find the resultant of the two tensions T_1 and T_2 acting at P. When the tensions T_1, T_2, and T_3 are balanced, the angles between T_1 and the vertical and T_2 and the vertical are as marked.

Back

In the space below, draw a scale diagram of the forces T_1 and T_2. Use the diagram to find the resultant of the two forces.

Front

State the scale used.

Back

Scale = ........................................

Front

State the value of the resultant.

Back

Value = ........................................

Front

State the direction of the resultant.

Back

Direction = ........................................

Front

The diagram shows an enlarged drawing of the end of a metre rule being used to measure the length of a small feather.

Back

A) 19 mm B) 29 mm C) 19 cm D) 29 cm

Front

The diameter of a copper wire is thought to be approximately 0.3 mm. The instrument used to obtain a more accurate measurement of the diameter of the wire is a micrometer.

Back

A) measuring tape B) metre rule C) micrometer D) ruler

Front

Apparatus that could be used to determine the volume of a small block of unknown material includes a measuring cylinder and a metre rule.

Back

A) measuring cylinder, metre rule B) measuring cylinder, stopwatch C) metre rule, balance D) metre rule, stopwatch