Billy Bob is trying to decide whether to push a 50 kg dresser up a 4.5 m ramp or lift it directly into the back of a truck. The floor of the truck is 1.5 m above the surface of the street. a. What is the ideal mechanical advantage of the ramp? b. How much force is required to lift the dresser vertically upwards into the back of the truck? c. If the ramp were frictionless, then how much force is needed to push the dresser up it at constant speed? TUT

Billy Bob is trying to decide whether to push a 50 kg dresser up a 4.5 m ramp or lift it directly into the back of a truck. The floor of the truck is 1.5 m above the surface of the street. a. What is the ideal mechanical advantage of the ramp? b. How much force is required to lift the dresser vertically upwards into the back of the truck? c. If the ramp were frictionless, then how much force is needed to push the dresser up it at constant speed? TUT

Name: 7. Billy Bob is trying to decide whether to push a 50 kg dresser up a
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Description: 7. Billy Bob is trying to decide whether to push a 50 kg dresser up a 4.5 m ramp or lift it directly intothe back of a truck. The floor of the truck is 1.5 m above the surface of the street.a.What is the ideal mechanical advantage of the ramp?b. How

Elements Of Electromagnetics

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Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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Free Body Diagram

The system of forces acting on a body tends to either rotate it or make the body undergo motion. In general, when an external agent exerts a force on a body, the body undergoes translational motion and rotational motion. The body has six degrees of freedom under the influence of that force. Here, three degrees of freedom are from the translational motion while the other three are from the rotation motion. However, sometimes the bodies are not allowed to undergo any motion and are fixed, under such conditions the body is said to be constrained.

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7. Billy Bob is trying to decide whether to push a 50 kg dresser up a 4.5 m ramp or lift it directly into
the back of a truck. The floor of the truck is 1.5 m above the surface of the street.
a.
What is the ideal mechanical advantage of the ramp?
b. How much force is required to lift the dresser vertically upwards into the back of the truck?
C. If the ramp were frictionless, then how much force is needed to push the dresser up it at
constant speed?
d.
up the
Billy Bob realizes that the ramp has a fairly rough surface. When he pushes the dresser
ramp, he has to apply 225 N of force. What is the mechanical advantage of the ramp?
How much work is required to lift the dresser vertically into the back of the truck?
f. How much work is required to move the dresser up the ramp?
e.
g. What is the efficiency of the ramp?

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