An animal is walking forward. There is an applied force from the animal of 25 N to the right, a frictional force of 18 N to the left, a force of gravity of 65 N down and the animal is being pushed up by the ground with 65 N. What best describes the motion of the animal?

Question

a
The animal will move to the left due to an unbalanced force on the left
b
The animal will move to the right due to an unbalanced force on the right
c
The animal will move down due to an unbalanced force down
d
The animal will move up due to an unbalanced force upwards

Answer 1

To understand the motion of the animal, we need to analyze the forces acting on it.

1. There is an applied force of 25 N to the right.
2. There is a frictional force of 18 N to the left.
3. The force of gravity acting downward is 65 N.
4. The normal force from the ground acting upward is also 65 N.

Let's break it down:

• Horizontal Forces:
  • Applied Force (right) = 25 N
  • Frictional Force (left) = 18 N
  • Net Horizontal Force = 25 N (right) - 18 N (left) = 7 N (right)

Since the net horizontal force is 7 N to the right, there is an unbalanced force acting on the animal, which means it will accelerate to the right.

• Vertical Forces:
  • Force of Gravity (down) = 65 N
  • Normal Force (up) = 65 N
  • Net Vertical Force = 65 N (up) - 65 N (down) = 0 N

Since the vertical forces are balanced (net vertical force = 0), the animal will not move up or down.

Considering both the horizontal and vertical forces, the animal will move to the right due to the unbalanced horizontal force.

Therefore, the correct answer is:

b. The animal will move to the right due to an unbalanced force on the right.