Question

arrow according to its type.
apply the method described in the reading to construct free - body diagrams for the situations
described below. use the symbols we discussed in class. draw force vectors on the circle and la
them.

1. a book is at rest on a table top. diagram the forces acting on the book.

1. a girl is suspended motionless from the ceiling by a rope. diagram the forces acting on the girl

she holds onto the rope.

1. an egg is free - falling from a nest in a tree. neglect air resistance. diagram the forces acting on

the egg as it falls.

1. an egg is falling (not freely, do not neglect air resistance) from a nest in a tree. diagram the

forces acting on the egg as it falls.

Explanation:

1. Book at rest on a table top

Step1: Identify forces

The book has two forces: gravitational force ($F_g$) downward and normal force ($F_N$) upward from the table.

Step2: Draw vectors

Draw a downward vector labeled $F_g$ (gravity) and an upward vector labeled $F_N$ (normal force) on the circle. The lengths of the vectors should be equal as the book is in equilibrium (at rest).

Step1: Identify forces

The girl has gravitational force ($F_g$) downward and tension force ($F_T$) upward from the rope.

Step2: Draw vectors

Draw a downward vector labeled $F_g$ (gravity) and an upward vector labeled $F_T$ (tension) on the circle. The lengths of the vectors should be equal as the girl is in equilibrium (motionless).

Step1: Identify forces

Only gravitational force ($F_g$) acts on the egg as air resistance is neglected.

Step2: Draw vector

Draw a downward vector labeled $F_g$ (gravity) on the circle.

Answer:

Forces: Gravitational force ($F_g$) downward, Normal force ($F_N$) upward (equal in magnitude, opposite in direction).

2. Girl suspended motionless from ceiling by a rope