A 35-kgcrate rests on a horizontal floor, and a 65-kg person is standing on the crate.
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A 50-kg woman is riding on an elevator.
Question 5
5.
Draw the free body diagram for the woman.
Question 6
6.
What is her apparent weight when it is accelerating upward at 1.5 m/s2?
A 0.05-kg cookie is on a non-stick (frictionless) cookie sheet inclined at 30°
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A cup of hot chocolate is sitting on the dashboard of a car that is traveling at a constant velocity. The coefficient of static friction between the cup and the dashboard is 0.30. Suddenly, the car accelerates.
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A 20.0-kg sled is being pulled across a horizontal surface at a constant velocity. The pulling force has a magnitude of 80.0 N and is directed at an angle of 30.0° above the horizontal.
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Suppose you have a 120-kg wooden crate resting on a wood floor (μs = 0.5, μk = 0.3). You push the crate to the right.
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A skier is heading down a 10.0° slope. The coefficient of friction for waxed wood on wet snow (𝜇𝑘 = 0.1).
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Question 1
1.
Draw the Free Body Diagram for the person
Question 2
2.
Draw the Free Body Diagram for the crate
Question 3
3.
Determine the magnitude of the normal force that the floor exerts on the crate.
Question 4
4.
Determine the magnitude of the normal force that the crate exerts on the person.
Question 7
7.
Draw the free body digram for the cookie
Question 8
8.
What is the acceleration of the cookie as it slides down the cookie sheet?
Question 9
9.
If the cookie sheet is 0.75 m long, how much time to you have to catch the cookie before it falls off the edge?
Question 10
10.
Draw the free body diagram of the coffee cup
Question 11
11.
What is the maximum acceleration that the car can have without the cup sliding backward off the dashboard?
Question 12
12.
Draw a free body diagram for the sled.
Question 13
13.
Determine the coefficient of kinetic friction.
Question 14
14.
If the sled is being pulled at 1.0 m/s and the person stops pulling, how far will it slide before it stops.
Question 15
15.
Draw a free body diagram for the crate.
Question 16
16.
What maximum force can you exert horizontally on the crate without moving it?
Question 17
17.
If you continue to exert this force once the crate starts to slip, what will its acceleration then be?
Question 18
18.
Draw a free body diagram for the skier
Question 19
19.
Calculate the acceleration of a skier.
Question 20
20.
Find the angle of the slope down which this skier could coast at a constant velocity.
