When the vector sum of three co-planar forces, , , and , is

parallel to , we can conclude that  and 

A.

must sum to zero.

B.
must be equal and opposite.

C.
must have equal and opposite components perpendicular to .

D.
must have equal and opposite components parallel to .

E.
must have equal and opposite components parallel and perpendicular to .


Answer: C

Physics & Space Science

You might also like to view...

When a star has exhausted all of its hydrogen, it is said to have reached the zero-age main sequence (ZAMS)

Indicate whether the statement is true or false

Physics & Space Science

Two identical silver spheres of mass m and radius r are placed a distance R (sphere 1) and 2R (sphere 2) from the sun respectively. The ratio of the gravitational force exerted by the sun on sphere 1 to the pressure of solar radiation on sphere 1 is T1; the ratio for sphere 2 is T2 . The ratio of T2 to T1 is

a. 0.25. b. 0.50. c. 1.0. d. 2.0. e. 4.0.

Physics & Space Science

The horizontal speed of a projectile

a. is zero b. stays constant c. continuously increases d. continuously decreases e. sometimes decreases and sometimes increases

Physics & Space Science

Based on the information given in Table 7.1, which dots on each plot correspond to which planets? Which correspond to the terrestrial planets, and which to the jovian planets?

What will be an ideal response?

Physics & Space Science