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Vadim26 [7]
2 years ago
14

A particle of weight W is placed on a rough plane which is inclined at an angle y to the horizontal. The coefficient of friction

between the particle and the plane is where < tan . Show that the magnitude of the least horizontal force tan - W μ 9 F needed to maintain the particle in equilibrium is F=;
\frac{tan \beta  -  \alpha }{?}    w \div 1 +  \beta tan \alpha
​
Physics
1 answer:
murzikaleks [220]2 years ago
8 0

Answer:

45x+65b=67csseekoolmanbejk

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Volcanic eruptions are caused primarily by the movement of
evablogger [386]
It would be rock by erosion bc the rocks erode to form a volcano
7 0
4 years ago
A typical ten-pound car wheel has a moment of inertia of about 0.35kg⋅m2. The wheel rotates about the axle at a constant angular
QveST [7]

Answer:

The rotational kinetic energy of the rotating wheel is 529.09 J  

Explanation:

Given;

moment of inertia I = 0.35kg⋅m²

number of revolutions = 35.0

time of revolution, t = 4.00 s

Angular speed (in revolution per second), ω = 35/4 = 8.75 rev/s

Angular speed (in radian per second), ω = 8.75 rev/s x 2π = 54.985 rad/s

Rotational kinetic energy, K = ¹/₂Iω²

Rotational kinetic energy, K = ¹/₂ x 0.35 x (54.985)²

Rotational kinetic energy, K = 529.09 J  

Therefore, the rotational kinetic energy of the rotating wheel is 529.09 J  

7 0
3 years ago
A 1kg skateboard sits at the top of a ramp 20 fr off the ground . How much potential energy does it have ?
Finger [1]

Answer:

196J

Explanation:

Given parameters:

Mass of skateboard  = 1kg

Height off the ground  = 20m

Unknown:

Potential energy  = ?

Solution:

The potential energy is the energy due to the position of a body above the ground.

It is mathematically expressed as:

      Potential energy  = mass x acceleration due gravity x height

     Potential energy  = 1 x 9.8 x 20  = 196J

8 0
3 years ago
A piece of lead has mass of 22.7 it occupies a volume of 2 cm3 what is the destiny of the lead
inna [77]
Density=m/v so d=22.7/2 which gives you an answer of 11.35
3 0
3 years ago
Identify the following items as scalar or vector.
Salsk061 [2.6K]

Answer:

Speed - scalar

Velocity - vector

Displacement - vector

Distance - scalar

Measurement - scalar

Measurement and direction - vector

60 m north - vector

100 m west - vector

200 m/s - scalar.

7 0
4 years ago
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