Answer:
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Answer:
Part a)
Part B)
since the required static coefficient is more then the given value so it will not remain at rest at highest position.
Part c)
Explanation:
Frictional force on the rock while it is moving upwards along the plane is given as
now we have
now by energy conservation we can say
Work done by friction = loss in mechanical energy
here we know that
Part B)
Now at the maximum height position we can say that force due to static friction must be balanced by its weight along the plane
so we will have
since the required static coefficient is more then the given value so it will not remain at rest at highest position.
Part c)
Again by mechanical energy conservation law
Work done by friction = loss in mechanical energy
here we know that
Answer:
725.2 N
Explanation:
Since it is not stated the scale, the person or both accelerated or experience weightlessness, the net force acting on the bathroom scale is the weight of the person acting downward as the person stands on the scale .
Weight = mass of a body × acceleration due to gravity
= 74 kg × 9.8 m/s²
= 725.2 N
A hypothesis is a possible theory to how something might work. The answer is D.
Easy. It oxidized. Its called verdigris. That is the name of the pigment that turns the copper green.