A 20.0 kg rock is sliding on a rough , horizontal surface at8.00 m/s and eventually stops due to friction .The coefficient ofkin
etic fricction between the rock and the surface is 0.20
what average thermal power is produced as the rock stops?
what average thermal power is produced as the rock stops?
2 answers:
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Explanation :
When a person is sliding with constant velocity, the forces that are acting on him are :
(1) Weight, W = mg where g is acceleration due to gravity.
(2) Friction forces acting opposite to the direction of motion.
(3) Normal force.
The forces acting on the person is balanced because the person is sliding with constant velocity.
From figure it is clear that, friction force is balanced by and normal is balanced by
.
Answer:
Check the explanation
Explanation:
Kindly check the attached image below to see the step by step explanation to the question above.
Answer:
g = 0.98 m
Explanation:
given data:
upper portion weight 438 N and its center of gravity is 1.17 m
upper legs weight 144 N and its center of gravity is 0.835 m
lower leg weight 88 N and its center of gravity is 0.270 m
position of center of gravity of whole body can be determine by using following relation
where is mass of respective part and
is center of gravity
g = 0.98 m