2 Blocks 1 and 2 rest on rough surfaces with coefficient of frictions ¢1 and ¢2 respectively. The blocks
are connected by a cable that runs over a smooth pulley and are in equilibrium as shown below with the following values.
W2 = 50N
thetha 1 = 30 degrees
thetha 2= 40 degrees
¢1= 0.3
¢2= 0.25
a. If Block 2 is on the verge of sliding down the plane, what is the minimum weight W1, required for equilibrium?
b. If Block 2 is on the verge of sliding up the plane, what is the minimum weight W1, required for equilibrium
? Do not consider overturning.
Answers
Answer:
100N25NExplanation:
a) On the verge of tipping over, reaction acts at the corner A
When slippage occurs,
Block moves w/ const. velocity equilibrium
Three-force member: reaction at A must pass through B
tan b/2h, h b/ 2 θ µ = = ∴= k k ( µ )
b) When slippage occurs,
Block moves w/ const. velocity equilibrium
Three-force member: reaction at C must pass through G
k tanθ µ =
tan x/ H/2 , x H/2
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Which of these is not a reason why a dirt or gravel road can be dangerous
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Answer:
There can be gravel or dust kicked back onto your windshield.
Not really, but maybe to a certain extent. A dirt road is made primarily out of dirt. A gravel road is made primarily out of gravel. But local government road maintenance departments might have a little gravel mixed in with their dirt, and a little dirt mixed in with their gravel. Also, dust and dirt can get blown by the wind onto a gravel road. Nobody is going to go out there with a vacuum cleaner and clean the dirt out of the gravel road.
Driving on a gravel road or in the dirt is not unsafe if a GPS network is lost. The correct option is C.
What is GPS?A satellite-based radionavigation system owned by the US government and run by the US Space Force is known as the Global Positioning System, or Navstar GPS.
The signal comprises information that a receiver can utilise to determine the satellites' positions and make other necessary changes for precise positioning.
The receiver determines the distance, or range, from the receiver to the satellite using the time difference between the time of signal receipt and the broadcast time.
A gravel road is a street that has crushed stone and gravel on its upper surface. While driving on such roads, there is a chance that tyres will become punctured or that the car would lose traction.
Thus, the correct option is C.
For more details regarding GPS, visit:
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Your question seems incomplete, the missing options are:
A. Your tires are more likely to be punctured
B. There can be gravel or dust kicked back onto your windshield
C. It means you are off the GPS network which is dangerous
D. It’s most likely for your vehicle to lose traction
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First real answer i’ll give Brainlyist
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